<?php
+/**
+ * WordPress Link Template Functions
+ *
+ * @package WordPress
+ * @subpackage Template
+ */
-
-function the_permalink() {
- echo apply_filters('the_permalink', get_permalink());
+/**
+ * Display the permalink for the current post.
+ *
+ * @since 1.2.0
+ * @since 4.4.0 Added the `$post` parameter.
+ *
+ * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`.
+ */
+function the_permalink( $post = 0 ) {
+ /**
+ * Filter the display of the permalink for the current post.
+ *
+ * @since 1.5.0
+ * @since 4.4.0 Added the `$post` parameter.
+ *
+ * @param string $permalink The permalink for the current post.
+ * @param int|WP_Post $post Post ID, WP_Post object, or 0. Default 0.
+ */
+ echo esc_url( apply_filters( 'the_permalink', get_permalink( $post ), $post ) );
}
-
/**
- * Conditionally adds a trailing slash if the permalink structure
- * has a trailing slash, strips the trailing slash if not
- * @global object Uses $wp_rewrite
- * @param $string string a URL with or without a trailing slash
- * @param $type_of_url string the type of URL being considered (e.g. single, category, etc) for use in the filter
- * @return string
+ * Retrieve trailing slash string, if site is set for adding trailing slashes.
+ *
+ * Conditionally adds a trailing slash if the permalink structure has a trailing
+ * slash, strips the trailing slash if not. The string is passed through the
+ * 'user_trailingslashit' filter. Will remove trailing slash from string, if
+ * site is not set to have them.
+ *
+ * @since 2.2.0
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string $string URL with or without a trailing slash.
+ * @param string $type_of_url The type of URL being considered (e.g. single, category, etc) for use in the filter.
+ * @return string The URL with the trailing slash appended or stripped.
*/
function user_trailingslashit($string, $type_of_url = '') {
global $wp_rewrite;
else
$string = untrailingslashit($string);
- // Note that $type_of_url can be one of following:
- // single, single_trackback, single_feed, single_paged, feed, category, page, year, month, day, paged
- $string = apply_filters('user_trailingslashit', $string, $type_of_url);
- return $string;
+ /**
+ * Filter the trailing slashed string, depending on whether the site is set
+ * to use training slashes.
+ *
+ * @since 2.2.0
+ *
+ * @param string $string URL with or without a trailing slash.
+ * @param string $type_of_url The type of URL being considered. Accepts 'single', 'single_trackback',
+ * 'single_feed', 'single_paged', 'feed', 'category', 'page', 'year',
+ * 'month', 'day', 'paged', 'post_type_archive'.
+ */
+ return apply_filters( 'user_trailingslashit', $string, $type_of_url );
}
-
-function permalink_anchor($mode = 'id') {
- global $post;
- switch ( strtolower($mode) ) {
+/**
+ * Display permalink anchor for current post.
+ *
+ * The permalink mode title will use the post title for the 'a' element 'id'
+ * attribute. The id mode uses 'post-' with the post ID for the 'id' attribute.
+ *
+ * @since 0.71
+ *
+ * @param string $mode Permalink mode can be either 'title', 'id', or default, which is 'id'.
+ */
+function permalink_anchor( $mode = 'id' ) {
+ $post = get_post();
+ switch ( strtolower( $mode ) ) {
case 'title':
- $title = sanitize_title($post->post_title) . '-' . $id;
+ $title = sanitize_title( $post->post_title ) . '-' . $post->ID;
echo '<a id="'.$title.'"></a>';
break;
case 'id':
}
}
+/**
+ * Retrieve full permalink for current post or post ID.
+ *
+ * This function is an alias for get_permalink().
+ *
+ * @since 3.9.0
+ *
+ * @see get_permalink()
+ *
+ * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`.
+ * @param bool $leavename Optional. Whether to keep post name or page name. Default false.
+ *
+ * @return string|false The permalink URL or false if post does not exist.
+ */
+function get_the_permalink( $post = 0, $leavename = false ) {
+ return get_permalink( $post, $leavename );
+}
-function get_permalink($id = 0) {
+/**
+ * Retrieve full permalink for current post or post ID.
+ *
+ * @since 1.0.0
+ *
+ * @param int|WP_Post $post Optional. Post ID or post object. Default is the global `$post`.
+ * @param bool $leavename Optional. Whether to keep post name or page name. Default false.
+ * @return string|false The permalink URL or false if post does not exist.
+ */
+function get_permalink( $post = 0, $leavename = false ) {
$rewritecode = array(
'%year%',
'%monthnum%',
'%hour%',
'%minute%',
'%second%',
- '%postname%',
+ $leavename? '' : '%postname%',
'%post_id%',
'%category%',
'%author%',
- '%pagename%'
+ $leavename? '' : '%pagename%',
);
- $post = &get_post($id);
+ if ( is_object( $post ) && isset( $post->filter ) && 'sample' == $post->filter ) {
+ $sample = true;
+ } else {
+ $post = get_post( $post );
+ $sample = false;
+ }
- if ( empty($post->ID) ) return FALSE;
+ if ( empty($post->ID) )
+ return false;
if ( $post->post_type == 'page' )
- return get_page_link($post->ID);
- elseif ($post->post_type == 'attachment')
- return get_attachment_link($post->ID);
+ return get_page_link($post, $leavename, $sample);
+ elseif ( $post->post_type == 'attachment' )
+ return get_attachment_link( $post, $leavename );
+ elseif ( in_array($post->post_type, get_post_types( array('_builtin' => false) ) ) )
+ return get_post_permalink($post, $leavename, $sample);
$permalink = get_option('permalink_structure');
- if ( '' != $permalink && !in_array($post->post_status, array('draft', 'pending')) ) {
+ /**
+ * Filter the permalink structure for a post before token replacement occurs.
+ *
+ * Only applies to posts with post_type of 'post'.
+ *
+ * @since 3.0.0
+ *
+ * @param string $permalink The site's permalink structure.
+ * @param WP_Post $post The post in question.
+ * @param bool $leavename Whether to keep the post name.
+ */
+ $permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename );
+
+ if ( '' != $permalink && !in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft', 'future' ) ) ) {
$unixtime = strtotime($post->post_date);
$category = '';
- if (strpos($permalink, '%category%') !== false) {
+ if ( strpos($permalink, '%category%') !== false ) {
$cats = get_the_category($post->ID);
- if ( $cats )
+ if ( $cats ) {
usort($cats, '_usort_terms_by_ID'); // order by ID
- $category = $cats[0]->slug;
- if ( $parent=$cats[0]->parent )
- $category = get_category_parents($parent, FALSE, '/', TRUE) . $category;
+
+ /**
+ * Filter the category that gets used in the %category% permalink token.
+ *
+ * @since 3.5.0
+ *
+ * @param stdClass $cat The category to use in the permalink.
+ * @param array $cats Array of all categories associated with the post.
+ * @param WP_Post $post The post in question.
+ */
+ $category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post );
+
+ $category_object = get_term( $category_object, 'category' );
+ $category = $category_object->slug;
+ if ( $parent = $category_object->parent )
+ $category = get_category_parents($parent, false, '/', true) . $category;
+ }
+ // show default category in permalinks, without
+ // having to assign it explicitly
+ if ( empty($category) ) {
+ $default_category = get_term( get_option( 'default_category' ), 'category' );
+ $category = is_wp_error( $default_category ) ? '' : $default_category->slug;
+ }
+ }
+
+ $author = '';
+ if ( strpos($permalink, '%author%') !== false ) {
+ $authordata = get_userdata($post->post_author);
+ $author = $authordata->user_nicename;
}
- $authordata = get_userdata($post->post_author);
- $author = $authordata->user_nicename;
$date = explode(" ",date('Y m d H i s', $unixtime));
$rewritereplace =
array(
$author,
$post->post_name,
);
- $permalink = get_option('home') . str_replace($rewritecode, $rewritereplace, $permalink);
+ $permalink = home_url( str_replace($rewritecode, $rewritereplace, $permalink) );
$permalink = user_trailingslashit($permalink, 'single');
- return apply_filters('post_link', $permalink, $post);
} else { // if they're not using the fancy permalink option
- $permalink = get_option('home') . '/?p=' . $post->ID;
- return apply_filters('post_link', $permalink, $post);
+ $permalink = home_url('?p=' . $post->ID);
}
-}
-// get permalink from post ID
-function post_permalink($post_id = 0, $deprecated = '') {
- return get_permalink($post_id);
+ /**
+ * Filter the permalink for a post.
+ *
+ * Only applies to posts with post_type of 'post'.
+ *
+ * @since 1.5.0
+ *
+ * @param string $permalink The post's permalink.
+ * @param WP_Post $post The post in question.
+ * @param bool $leavename Whether to keep the post name.
+ */
+ return apply_filters( 'post_link', $permalink, $post, $leavename );
}
-// Respects page_on_front. Use this one.
-function get_page_link($id = false) {
- global $post;
+/**
+ * Retrieve the permalink for a post with a custom post type.
+ *
+ * @since 3.0.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param int $id Optional. Post ID.
+ * @param bool $leavename Optional, defaults to false. Whether to keep post name.
+ * @param bool $sample Optional, defaults to false. Is it a sample permalink.
+ * @return string|WP_Error The post permalink.
+ */
+function get_post_permalink( $id = 0, $leavename = false, $sample = false ) {
+ global $wp_rewrite;
- $id = (int) $id;
- if ( !$id )
- $id = (int) $post->ID;
+ $post = get_post($id);
- if ( 'page' == get_option('show_on_front') && $id == get_option('page_on_front') )
- $link = get_option('home');
- else
- $link = _get_page_link( $id );
+ if ( is_wp_error( $post ) )
+ return $post;
+
+ $post_link = $wp_rewrite->get_extra_permastruct($post->post_type);
+
+ $slug = $post->post_name;
+
+ $draft_or_pending = get_post_status( $id ) && in_array( get_post_status( $id ), array( 'draft', 'pending', 'auto-draft', 'future' ) );
+
+ $post_type = get_post_type_object($post->post_type);
+
+ if ( $post_type->hierarchical ) {
+ $slug = get_page_uri( $id );
+ }
+
+ if ( !empty($post_link) && ( !$draft_or_pending || $sample ) ) {
+ if ( ! $leavename ) {
+ $post_link = str_replace("%$post->post_type%", $slug, $post_link);
+ }
+ $post_link = home_url( user_trailingslashit($post_link) );
+ } else {
+ if ( $post_type->query_var && ( isset($post->post_status) && !$draft_or_pending ) )
+ $post_link = add_query_arg($post_type->query_var, $slug, '');
+ else
+ $post_link = add_query_arg(array('post_type' => $post->post_type, 'p' => $post->ID), '');
+ $post_link = home_url($post_link);
+ }
+
+ /**
+ * Filter the permalink for a post with a custom post type.
+ *
+ * @since 3.0.0
+ *
+ * @param string $post_link The post's permalink.
+ * @param WP_Post $post The post in question.
+ * @param bool $leavename Whether to keep the post name.
+ * @param bool $sample Is it a sample permalink.
+ */
+ return apply_filters( 'post_type_link', $post_link, $post, $leavename, $sample );
+}
+
+/**
+ * Retrieve the permalink for current page or page ID.
+ *
+ * Respects page_on_front. Use this one.
+ *
+ * @since 1.5.0
+ *
+ * @param int|object $post Optional. Post ID or object.
+ * @param bool $leavename Optional, defaults to false. Whether to keep page name.
+ * @param bool $sample Optional, defaults to false. Is it a sample permalink.
+ * @return string The page permalink.
+ */
+function get_page_link( $post = false, $leavename = false, $sample = false ) {
+ $post = get_post( $post );
- return apply_filters('page_link', $link, $id);
+ if ( 'page' == get_option( 'show_on_front' ) && $post->ID == get_option( 'page_on_front' ) )
+ $link = home_url('/');
+ else
+ $link = _get_page_link( $post, $leavename, $sample );
+
+ /**
+ * Filter the permalink for a page.
+ *
+ * @since 1.5.0
+ *
+ * @param string $link The page's permalink.
+ * @param int $post_id The ID of the page.
+ * @param bool $sample Is it a sample permalink.
+ */
+ return apply_filters( 'page_link', $link, $post->ID, $sample );
}
-// Ignores page_on_front. Internal use only.
-function _get_page_link( $id = false ) {
- global $post, $wp_rewrite;
+/**
+ * Retrieve the page permalink.
+ *
+ * Ignores page_on_front. Internal use only.
+ *
+ * @since 2.1.0
+ * @access private
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param int|object $post Optional. Post ID or object.
+ * @param bool $leavename Optional. Leave name.
+ * @param bool $sample Optional. Sample permalink.
+ * @return string The page permalink.
+ */
+function _get_page_link( $post = false, $leavename = false, $sample = false ) {
+ global $wp_rewrite;
+
+ $post = get_post( $post );
+
+ $draft_or_pending = in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft' ) );
- if ( !$id )
- $id = (int) $post->ID;
+ $link = $wp_rewrite->get_page_permastruct();
- $pagestruct = $wp_rewrite->get_page_permastruct();
+ if ( !empty($link) && ( ( isset($post->post_status) && !$draft_or_pending ) || $sample ) ) {
+ if ( ! $leavename ) {
+ $link = str_replace('%pagename%', get_page_uri( $post ), $link);
+ }
- if ( '' != $pagestruct && 'draft' != $post->post_status ) {
- $link = get_page_uri($id);
- $link = str_replace('%pagename%', $link, $pagestruct);
- $link = get_option('home') . "/$link";
+ $link = home_url($link);
$link = user_trailingslashit($link, 'page');
} else {
- $link = get_option('home') . "/?page_id=$id";
+ $link = home_url( '?page_id=' . $post->ID );
}
- return apply_filters( '_get_page_link', $link, $id );
+ /**
+ * Filter the permalink for a non-page_on_front page.
+ *
+ * @since 2.1.0
+ *
+ * @param string $link The page's permalink.
+ * @param int $post_id The ID of the page.
+ */
+ return apply_filters( '_get_page_link', $link, $post->ID );
}
-function get_attachment_link($id = false) {
- global $post, $wp_rewrite;
+/**
+ * Retrieve permalink for attachment.
+ *
+ * This can be used in the WordPress Loop or outside of it.
+ *
+ * @since 2.0.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param int|object $post Optional. Post ID or object.
+ * @param bool $leavename Optional. Leave name.
+ * @return string The attachment permalink.
+ */
+function get_attachment_link( $post = null, $leavename = false ) {
+ global $wp_rewrite;
$link = false;
- if (! $id) {
- $id = (int) $post->ID;
+ $post = get_post( $post );
+ $parent = ( $post->post_parent > 0 && $post->post_parent != $post->ID ) ? get_post( $post->post_parent ) : false;
+ if ( $parent && ! in_array( $parent->post_type, get_post_types() ) ) {
+ $parent = false;
}
- $object = get_post($id);
- if ( $wp_rewrite->using_permalinks() && ($object->post_parent > 0) && ($object->post_parent != $id) ) {
- $parent = get_post($object->post_parent);
+ if ( $wp_rewrite->using_permalinks() && $parent ) {
if ( 'page' == $parent->post_type )
- $parentlink = _get_page_link( $object->post_parent ); // Ignores page_on_front
+ $parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front
else
- $parentlink = get_permalink( $object->post_parent );
- if (strpos($parentlink, '?') === false)
- $link = trailingslashit($parentlink) . $object->post_name . '/';
- }
+ $parentlink = get_permalink( $post->post_parent );
+
+ if ( is_numeric($post->post_name) || false !== strpos(get_option('permalink_structure'), '%category%') )
+ $name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker
+ else
+ $name = $post->post_name;
+
+ if ( strpos($parentlink, '?') === false )
+ $link = user_trailingslashit( trailingslashit($parentlink) . '%postname%' );
- if (! $link ) {
- $link = get_bloginfo('url') . "/?attachment_id=$id";
+ if ( ! $leavename )
+ $link = str_replace( '%postname%', $name, $link );
+ } elseif ( $wp_rewrite->using_permalinks() && ! $leavename ) {
+ $link = home_url( user_trailingslashit( $post->post_name ) );
}
- return apply_filters('attachment_link', $link, $id);
+ if ( ! $link )
+ $link = home_url( '/?attachment_id=' . $post->ID );
+
+ /**
+ * Filter the permalink for an attachment.
+ *
+ * @since 2.0.0
+ *
+ * @param string $link The attachment's permalink.
+ * @param int $post_id Attachment ID.
+ */
+ return apply_filters( 'attachment_link', $link, $post->ID );
}
+/**
+ * Retrieve the permalink for the year archives.
+ *
+ * @since 1.5.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param int|bool $year False for current year or year for permalink.
+ * @return string The permalink for the specified year archive.
+ */
function get_year_link($year) {
global $wp_rewrite;
if ( !$year )
- $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600));
+ $year = gmdate('Y', current_time('timestamp'));
$yearlink = $wp_rewrite->get_year_permastruct();
if ( !empty($yearlink) ) {
$yearlink = str_replace('%year%', $year, $yearlink);
- return apply_filters('year_link', get_option('home') . user_trailingslashit($yearlink, 'year'), $year);
+ $yearlink = home_url( user_trailingslashit( $yearlink, 'year' ) );
} else {
- return apply_filters('year_link', get_option('home') . '/?m=' . $year, $year);
+ $yearlink = home_url( '?m=' . $year );
}
+
+ /**
+ * Filter the year archive permalink.
+ *
+ * @since 1.5.0
+ *
+ * @param string $yearlink Permalink for the year archive.
+ * @param int $year Year for the archive.
+ */
+ return apply_filters( 'year_link', $yearlink, $year );
}
+/**
+ * Retrieve the permalink for the month archives with year.
+ *
+ * @since 1.0.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param bool|int $year False for current year. Integer of year.
+ * @param bool|int $month False for current month. Integer of month.
+ * @return string The permalink for the specified month and year archive.
+ */
function get_month_link($year, $month) {
global $wp_rewrite;
if ( !$year )
- $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600));
+ $year = gmdate('Y', current_time('timestamp'));
if ( !$month )
- $month = gmdate('m', time()+(get_option('gmt_offset') * 3600));
+ $month = gmdate('m', current_time('timestamp'));
$monthlink = $wp_rewrite->get_month_permastruct();
if ( !empty($monthlink) ) {
$monthlink = str_replace('%year%', $year, $monthlink);
$monthlink = str_replace('%monthnum%', zeroise(intval($month), 2), $monthlink);
- return apply_filters('month_link', get_option('home') . user_trailingslashit($monthlink, 'month'), $year, $month);
+ $monthlink = home_url( user_trailingslashit( $monthlink, 'month' ) );
} else {
- return apply_filters('month_link', get_option('home') . '/?m=' . $year . zeroise($month, 2), $year, $month);
+ $monthlink = home_url( '?m=' . $year . zeroise( $month, 2 ) );
}
+
+ /**
+ * Filter the month archive permalink.
+ *
+ * @since 1.5.0
+ *
+ * @param string $monthlink Permalink for the month archive.
+ * @param int $year Year for the archive.
+ * @param int $month The month for the archive.
+ */
+ return apply_filters( 'month_link', $monthlink, $year, $month );
}
+/**
+ * Retrieve the permalink for the day archives with year and month.
+ *
+ * @since 1.0.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param bool|int $year False for current year. Integer of year.
+ * @param bool|int $month False for current month. Integer of month.
+ * @param bool|int $day False for current day. Integer of day.
+ * @return string The permalink for the specified day, month, and year archive.
+ */
function get_day_link($year, $month, $day) {
global $wp_rewrite;
if ( !$year )
- $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600));
+ $year = gmdate('Y', current_time('timestamp'));
if ( !$month )
- $month = gmdate('m', time()+(get_option('gmt_offset') * 3600));
+ $month = gmdate('m', current_time('timestamp'));
if ( !$day )
- $day = gmdate('j', time()+(get_option('gmt_offset') * 3600));
+ $day = gmdate('j', current_time('timestamp'));
$daylink = $wp_rewrite->get_day_permastruct();
if ( !empty($daylink) ) {
$daylink = str_replace('%year%', $year, $daylink);
$daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink);
$daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink);
- return apply_filters('day_link', get_option('home') . user_trailingslashit($daylink, 'day'), $year, $month, $day);
+ $daylink = home_url( user_trailingslashit( $daylink, 'day' ) );
} else {
- return apply_filters('day_link', get_option('home') . '/?m=' . $year . zeroise($month, 2) . zeroise($day, 2), $year, $month, $day);
+ $daylink = home_url( '?m=' . $year . zeroise( $month, 2 ) . zeroise( $day, 2 ) );
}
+
+ /**
+ * Filter the day archive permalink.
+ *
+ * @since 1.5.0
+ *
+ * @param string $daylink Permalink for the day archive.
+ * @param int $year Year for the archive.
+ * @param int $month Month for the archive.
+ * @param int $day The day for the archive.
+ */
+ return apply_filters( 'day_link', $daylink, $year, $month, $day );
+}
+
+/**
+ * Display the permalink for the feed type.
+ *
+ * @since 3.0.0
+ *
+ * @param string $anchor The link's anchor text.
+ * @param string $feed Optional, defaults to default feed. Feed type.
+ */
+function the_feed_link( $anchor, $feed = '' ) {
+ $link = '<a href="' . esc_url( get_feed_link( $feed ) ) . '">' . $anchor . '</a>';
+
+ /**
+ * Filter the feed link anchor tag.
+ *
+ * @since 3.0.0
+ *
+ * @param string $link The complete anchor tag for a feed link.
+ * @param string $feed The feed type, or an empty string for the
+ * default feed type.
+ */
+ echo apply_filters( 'the_feed_link', $link, $feed );
}
-function get_feed_link($feed='rss2') {
+/**
+ * Retrieve the permalink for the feed type.
+ *
+ * @since 1.5.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string $feed Optional, defaults to default feed. Feed type.
+ * @return string The feed permalink.
+ */
+function get_feed_link($feed = '') {
global $wp_rewrite;
- $do_perma = 0;
- $feed_url = get_option('siteurl');
- $comment_feed_url = $feed_url;
$permalink = $wp_rewrite->get_feed_permastruct();
if ( '' != $permalink ) {
$permalink = $wp_rewrite->get_comment_feed_permastruct();
}
- if ( 'rss2' == $feed )
+ if ( get_default_feed() == $feed )
$feed = '';
$permalink = str_replace('%feed%', $feed, $permalink);
$permalink = preg_replace('#/+#', '/', "/$permalink");
- $output = get_option('home') . user_trailingslashit($permalink, 'feed');
+ $output = home_url( user_trailingslashit($permalink, 'feed') );
} else {
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
if ( false !== strpos($feed, 'comments_') )
$feed = str_replace('comments_', 'comments-', $feed);
- $output = get_option('home') . "/?feed={$feed}";
+ $output = home_url("?feed={$feed}");
}
- return apply_filters('feed_link', $output, $feed);
+ /**
+ * Filter the feed type permalink.
+ *
+ * @since 1.5.0
+ *
+ * @param string $output The feed permalink.
+ * @param string $feed Feed type.
+ */
+ return apply_filters( 'feed_link', $output, $feed );
}
-function get_post_comments_feed_link($post_id = '', $feed = 'rss2') {
- global $id;
+/**
+ * Retrieve the permalink for the post comments feed.
+ *
+ * @since 2.2.0
+ *
+ * @param int $post_id Optional. Post ID.
+ * @param string $feed Optional. Feed type.
+ * @return string The permalink for the comments feed for the given post.
+ */
+function get_post_comments_feed_link($post_id = 0, $feed = '') {
+ $post_id = absint( $post_id );
+
+ if ( ! $post_id )
+ $post_id = get_the_ID();
+
+ if ( empty( $feed ) )
+ $feed = get_default_feed();
- if ( empty($post_id) )
- $post_id = (int) $id;
+ $post = get_post( $post_id );
+ $unattached = 'attachment' === $post->post_type && 0 === (int) $post->post_parent;
if ( '' != get_option('permalink_structure') ) {
- $url = trailingslashit( get_permalink($post_id) ) . 'feed';
- if ( 'rss2' != $feed )
- $url .= "/$feed";
- $url = user_trailingslashit($url, 'single_feed');
- } else {
- $type = get_post_field('post_type', $post_id);
- if ( 'page' == $type )
- $url = get_option('home') . "/?feed=$feed&page_id=$post_id";
+ if ( 'page' == get_option('show_on_front') && $post_id == get_option('page_on_front') )
+ $url = _get_page_link( $post_id );
else
- $url = get_option('home') . "/?feed=$feed&p=$post_id";
+ $url = get_permalink($post_id);
+
+ if ( $unattached ) {
+ $url = home_url( '/feed/' );
+ if ( $feed !== get_default_feed() ) {
+ $url .= "$feed/";
+ }
+ $url = add_query_arg( 'attachment_id', $post_id, $url );
+ } else {
+ $url = trailingslashit($url) . 'feed';
+ if ( $feed != get_default_feed() )
+ $url .= "/$feed";
+ $url = user_trailingslashit($url, 'single_feed');
+ }
+ } else {
+ if ( $unattached ) {
+ $url = add_query_arg( array( 'feed' => $feed, 'attachment_id' => $post_id ), home_url( '/' ) );
+ } elseif ( 'page' == $post->post_type ) {
+ $url = add_query_arg( array( 'feed' => $feed, 'page_id' => $post_id ), home_url( '/' ) );
+ } else {
+ $url = add_query_arg( array( 'feed' => $feed, 'p' => $post_id ), home_url( '/' ) );
+ }
}
- return apply_filters('post_comments_feed_link', $url);
+ /**
+ * Filter the post comments feed permalink.
+ *
+ * @since 1.5.1
+ *
+ * @param string $url Post comments feed permalink.
+ */
+ return apply_filters( 'post_comments_feed_link', $url );
}
-function get_edit_post_link( $id = 0 ) {
- $post = &get_post( $id );
+/**
+ * Display the comment feed link for a post.
+ *
+ * Prints out the comment feed link for a post. Link text is placed in the
+ * anchor. If no link text is specified, default text is used. If no post ID is
+ * specified, the current post is used.
+ *
+ * @since 2.5.0
+ *
+ * @param string $link_text Descriptive text.
+ * @param int $post_id Optional post ID. Default to current post.
+ * @param string $feed Optional. Feed format.
+ */
+function post_comments_feed_link( $link_text = '', $post_id = '', $feed = '' ) {
+ $url = get_post_comments_feed_link( $post_id, $feed );
+ if ( empty( $link_text ) ) {
+ $link_text = __('Comments Feed');
+ }
- if ( $post->post_type == 'attachment' ) {
- return;
- } elseif ( $post->post_type == 'page' ) {
- if ( !current_user_can( 'edit_page', $post->ID ) )
- return;
+ $link = '<a href="' . esc_url( $url ) . '">' . $link_text . '</a>';
+ /**
+ * Filter the post comment feed link anchor tag.
+ *
+ * @since 2.8.0
+ *
+ * @param string $link The complete anchor tag for the comment feed link.
+ * @param int $post_id Post ID.
+ * @param string $feed The feed type, or an empty string for the default feed type.
+ */
+ echo apply_filters( 'post_comments_feed_link_html', $link, $post_id, $feed );
+}
+
+/**
+ * Retrieve the feed link for a given author.
+ *
+ * Returns a link to the feed for all posts by a given author. A specific feed
+ * can be requested or left blank to get the default feed.
+ *
+ * @since 2.5.0
+ *
+ * @param int $author_id ID of an author.
+ * @param string $feed Optional. Feed type.
+ * @return string Link to the feed for the author specified by $author_id.
+ */
+function get_author_feed_link( $author_id, $feed = '' ) {
+ $author_id = (int) $author_id;
+ $permalink_structure = get_option('permalink_structure');
- $file = 'page';
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ if ( '' == $permalink_structure ) {
+ $link = home_url("?feed=$feed&author=" . $author_id);
} else {
- if ( !current_user_can( 'edit_post', $post->ID ) )
- return;
+ $link = get_author_posts_url($author_id);
+ if ( $feed == get_default_feed() )
+ $feed_link = 'feed';
+ else
+ $feed_link = "feed/$feed";
- $file = 'post';
+ $link = trailingslashit($link) . user_trailingslashit($feed_link, 'feed');
}
- return apply_filters( 'get_edit_post_link', get_bloginfo( 'wpurl' ) . '/wp-admin/' . $file . '.php?action=edit&post=' . $post->ID, $post->ID );
+ /**
+ * Filter the feed link for a given author.
+ *
+ * @since 1.5.1
+ *
+ * @param string $link The author feed link.
+ * @param string $feed Feed type.
+ */
+ $link = apply_filters( 'author_feed_link', $link, $feed );
+
+ return $link;
}
-function edit_post_link( $link = 'Edit This', $before = '', $after = '' ) {
- global $post;
+/**
+ * Retrieve the feed link for a category.
+ *
+ * Returns a link to the feed for all posts in a given category. A specific feed
+ * can be requested or left blank to get the default feed.
+ *
+ * @since 2.5.0
+ *
+ * @param int $cat_id ID of a category.
+ * @param string $feed Optional. Feed type.
+ * @return string Link to the feed for the category specified by $cat_id.
+ */
+function get_category_feed_link( $cat_id, $feed = '' ) {
+ return get_term_feed_link( $cat_id, 'category', $feed );
+}
- if ( $post->post_type == 'attachment' ) {
- return;
- } elseif ( $post->post_type == 'page' ) {
- if ( !current_user_can( 'edit_page', $post->ID ) )
- return;
+/**
+ * Retrieve the feed link for a term.
+ *
+ * Returns a link to the feed for all posts in a given term. A specific feed
+ * can be requested or left blank to get the default feed.
+ *
+ * @since 3.0.0
+ *
+ * @param int $term_id ID of a category.
+ * @param string $taxonomy Optional. Taxonomy of $term_id
+ * @param string $feed Optional. Feed type.
+ * @return string|false Link to the feed for the term specified by $term_id and $taxonomy.
+ */
+function get_term_feed_link( $term_id, $taxonomy = 'category', $feed = '' ) {
+ $term_id = ( int ) $term_id;
- $file = 'page';
- } else {
- if ( !current_user_can( 'edit_post', $post->ID ) )
- return;
+ $term = get_term( $term_id, $taxonomy );
- $file = 'post';
- }
+ if ( empty( $term ) || is_wp_error( $term ) )
+ return false;
- $link = '<a href="' . get_edit_post_link( $post->ID ) . '" title="' . __( 'Edit post' ) . '">' . $link . '</a>';
- echo $before . apply_filters( 'edit_post_link', $link, $post->ID ) . $after;
-}
+ if ( empty( $feed ) )
+ $feed = get_default_feed();
-function get_edit_comment_link( $comment_id = 0 ) {
- $comment = &get_comment( $comment_id );
- $post = &get_post( $comment->comment_post_ID );
+ $permalink_structure = get_option( 'permalink_structure' );
- if ( $post->post_type == 'attachment' ) {
- return;
- } elseif ( $post->post_type == 'page' ) {
- if ( !current_user_can( 'edit_page', $post->ID ) )
- return;
+ if ( '' == $permalink_structure ) {
+ if ( 'category' == $taxonomy ) {
+ $link = home_url("?feed=$feed&cat=$term_id");
+ }
+ elseif ( 'post_tag' == $taxonomy ) {
+ $link = home_url("?feed=$feed&tag=$term->slug");
+ } else {
+ $t = get_taxonomy( $taxonomy );
+ $link = home_url("?feed=$feed&$t->query_var=$term->slug");
+ }
} else {
- if ( !current_user_can( 'edit_post', $post->ID ) )
- return;
- }
-
- $location = get_bloginfo( 'wpurl' ) . '/wp-admin/comment.php?action=editcomment&c=' . $comment->comment_ID;
- return apply_filters( 'get_edit_comment_link', $location );
-}
+ $link = get_term_link( $term_id, $term->taxonomy );
+ if ( $feed == get_default_feed() )
+ $feed_link = 'feed';
+ else
+ $feed_link = "feed/$feed";
-function edit_comment_link( $link = 'Edit This', $before = '', $after = '' ) {
- global $comment, $post;
+ $link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' );
+ }
- if ( $post->post_type == 'attachment' ) {
- return;
- } elseif ( $post->post_type == 'page' ) {
- if ( !current_user_can( 'edit_page', $post->ID ) )
- return;
+ if ( 'category' == $taxonomy ) {
+ /**
+ * Filter the category feed link.
+ *
+ * @since 1.5.1
+ *
+ * @param string $link The category feed link.
+ * @param string $feed Feed type.
+ */
+ $link = apply_filters( 'category_feed_link', $link, $feed );
+ } elseif ( 'post_tag' == $taxonomy ) {
+ /**
+ * Filter the post tag feed link.
+ *
+ * @since 2.3.0
+ *
+ * @param string $link The tag feed link.
+ * @param string $feed Feed type.
+ */
+ $link = apply_filters( 'tag_feed_link', $link, $feed );
} else {
- if ( !current_user_can( 'edit_post', $post->ID ) )
- return;
+ /**
+ * Filter the feed link for a taxonomy other than 'category' or 'post_tag'.
+ *
+ * @since 3.0.0
+ *
+ * @param string $link The taxonomy feed link.
+ * @param string $feed Feed type.
+ * @param string $feed The taxonomy name.
+ */
+ $link = apply_filters( 'taxonomy_feed_link', $link, $feed, $taxonomy );
}
- $link = '<a href="' . get_edit_comment_link( $comment->comment_ID ) . '" title="' . __( 'Edit comment' ) . '">' . $link . '</a>';
- echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID ) . $after;
+ return $link;
}
-// Navigation links
+/**
+ * Retrieve permalink for feed of tag.
+ *
+ * @since 2.3.0
+ *
+ * @param int $tag_id Tag ID.
+ * @param string $feed Optional. Feed type.
+ * @return string The feed permalink for the given tag.
+ */
+function get_tag_feed_link( $tag_id, $feed = '' ) {
+ return get_term_feed_link( $tag_id, 'post_tag', $feed );
+}
-function get_previous_post($in_same_cat = false, $excluded_categories = '') {
- global $post, $wpdb;
+/**
+ * Retrieve edit tag link.
+ *
+ * @since 2.7.0
+ *
+ * @param int $tag_id Tag ID
+ * @param string $taxonomy Taxonomy
+ * @return string The edit tag link URL for the given tag.
+ */
+function get_edit_tag_link( $tag_id, $taxonomy = 'post_tag' ) {
+ /**
+ * Filter the edit link for a tag (or term in another taxonomy).
+ *
+ * @since 2.7.0
+ *
+ * @param string $link The term edit link.
+ */
+ return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag_id, $taxonomy ) );
+}
- if( empty($post) || !is_single() || is_attachment() )
- return null;
+/**
+ * Display or retrieve edit tag link with formatting.
+ *
+ * @since 2.7.0
+ *
+ * @param string $link Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @param object $tag Tag object.
+ */
+function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) {
+ $link = edit_term_link( $link, '', '', $tag, false );
+
+ /**
+ * Filter the anchor tag for the edit link for a tag (or term in another taxonomy).
+ *
+ * @since 2.7.0
+ *
+ * @param string $link The anchor tag for the edit link.
+ */
+ echo $before . apply_filters( 'edit_tag_link', $link ) . $after;
+}
- $current_post_date = $post->post_date;
+/**
+ * Retrieves the URL for editing a given term.
+ *
+ * @since 3.1.0
+ * @since 4.5.0 The `$taxonomy` argument was made optional.
+ *
+ * @param int $term_id Term ID.
+ * @param string $taxonomy Optional. Taxonomy. Defaults to the taxonomy of the term identified by `$term_id`.
+ * @param string $object_type Optional. The object type. Used to highlight the proper post type menu on the linked page.
+ * Defaults to the first object_type associated with the taxonomy.
+ * @return string|null The edit term link URL for the given term, or null on failure.
+ */
+function get_edit_term_link( $term_id, $taxonomy = '', $object_type = '' ) {
+ $term = get_term( $term_id, $taxonomy );
+ if ( ! $term || is_wp_error( $term ) ) {
+ return;
+ }
- $join = '';
- if ( $in_same_cat ) {
- $join = " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id ";
- $cat_array = wp_get_object_terms($post->ID, 'category', 'fields=tt_ids');
- $join .= ' AND (tr.term_taxonomy_id = ' . intval($cat_array[0]);
- for ( $i = 1; $i < (count($cat_array)); $i++ ) {
- $join .= ' OR tr.term_taxonomy_id = ' . intval($cat_array[$i]);
- }
- $join .= ')';
+ $tax = get_taxonomy( $term->taxonomy );
+ if ( ! $tax || ! current_user_can( $tax->cap->edit_terms ) ) {
+ return;
}
- $sql_exclude_cats = '';
- if ( !empty($excluded_categories) ) {
- $blah = explode(' and ', $excluded_categories);
- $posts_in_ex_cats = get_objects_in_term($blah, 'category');
- $posts_in_ex_cats_sql = 'AND p.ID NOT IN (' . implode($posts_in_ex_cats, ',') . ')';
+ $args = array(
+ 'taxonomy' => $taxonomy,
+ 'tag_ID' => $term->term_id,
+ );
+
+ if ( $object_type ) {
+ $args['post_type'] = $object_type;
+ } elseif ( ! empty( $tax->object_type ) ) {
+ $args['post_type'] = reset( $tax->object_type );
}
- $join = apply_filters( 'get_previous_post_join', $join, $in_same_cat, $excluded_categories );
- $where = apply_filters( 'get_previous_post_where', "WHERE p.post_date < '$current_post_date' AND p.post_type = 'post' AND p.post_status = 'publish' $posts_in_ex_cats_sql", $in_same_cat, $excluded_categories );
- $sort = apply_filters( 'get_previous_post_sort', 'ORDER BY p.post_date DESC LIMIT 1' );
+ if ( $tax->show_ui ) {
+ $location = add_query_arg( $args, admin_url( 'term.php' ) );
+ } else {
+ $location = '';
+ }
- return @$wpdb->get_row("SELECT p.ID, p.post_title FROM $wpdb->posts AS p $join $where $sort");
+ /**
+ * Filter the edit link for a term.
+ *
+ * @since 3.1.0
+ *
+ * @param string $location The edit link.
+ * @param int $term_id Term ID.
+ * @param string $taxonomy Taxonomy name.
+ * @param string $object_type The object type (eg. the post type).
+ */
+ return apply_filters( 'get_edit_term_link', $location, $term_id, $taxonomy, $object_type );
}
-function get_next_post($in_same_cat = false, $excluded_categories = '') {
- global $post, $wpdb;
+/**
+ * Display or retrieve edit term link with formatting.
+ *
+ * @since 3.1.0
+ *
+ * @param string $link Optional. Anchor text. Default empty.
+ * @param string $before Optional. Display before edit link. Default empty.
+ * @param string $after Optional. Display after edit link. Default empty.
+ * @param object $term Optional. Term object. If null, the queried object will be inspected. Default null.
+ * @param bool $echo Optional. Whether or not to echo the return. Default true.
+ * @return string|void HTML content.
+ */
+function edit_term_link( $link = '', $before = '', $after = '', $term = null, $echo = true ) {
+ if ( is_null( $term ) )
+ $term = get_queried_object();
- if( empty($post) || !is_single() || is_attachment() )
- return null;
+ if ( ! $term )
+ return;
- $current_post_date = $post->post_date;
+ $tax = get_taxonomy( $term->taxonomy );
+ if ( ! current_user_can( $tax->cap->edit_terms ) )
+ return;
- $join = '';
- if ( $in_same_cat ) {
- $join = " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id ";
- $cat_array = wp_get_object_terms($post->ID, 'category', 'fields=tt_ids');
- $join .= ' AND (tr.term_taxonomy_id = ' . intval($cat_array[0]);
- for ( $i = 1; $i < (count($cat_array)); $i++ ) {
- $join .= ' OR tr.term_taxonomy_id = ' . intval($cat_array[$i]);
- }
- $join .= ')';
- }
+ if ( empty( $link ) )
+ $link = __('Edit This');
- $sql_exclude_cats = '';
- if ( !empty($excluded_categories) ) {
- $blah = explode(' and ', $excluded_categories);
- $posts_in_ex_cats = get_objects_in_term($blah, 'category');
- $posts_in_ex_cats_sql = 'AND p.ID NOT IN (' . implode($posts_in_ex_cats, ',') . ')';
- }
+ $link = '<a href="' . get_edit_term_link( $term->term_id, $term->taxonomy ) . '">' . $link . '</a>';
- $join = apply_filters( 'get_next_post_join', $join, $in_same_cat, $excluded_categories );
- $where = apply_filters( 'get_next_post_where', "WHERE p.post_date > '$current_post_date' AND p.post_type = 'post' AND p.post_status = 'publish' $posts_in_ex_cats_sql AND p.ID != $post->ID", $in_same_cat, $excluded_categories );
- $sort = apply_filters( 'get_next_post_sort', 'ORDER BY p.post_date ASC LIMIT 1' );
+ /**
+ * Filter the anchor tag for the edit link of a term.
+ *
+ * @since 3.1.0
+ *
+ * @param string $link The anchor tag for the edit link.
+ * @param int $term_id Term ID.
+ */
+ $link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after;
- return @$wpdb->get_row("SELECT p.ID, p.post_title FROM $wpdb->posts AS p $join $where $sort");
+ if ( $echo )
+ echo $link;
+ else
+ return $link;
}
+/**
+ * Retrieve permalink for search.
+ *
+ * @since 3.0.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string $query Optional. The query string to use. If empty the current query is used.
+ * @return string The search permalink.
+ */
+function get_search_link( $query = '' ) {
+ global $wp_rewrite;
-function previous_post_link($format='« %link', $link='%title', $in_same_cat = false, $excluded_categories = '') {
-
- if ( is_attachment() )
- $post = & get_post($GLOBALS['post']->post_parent);
+ if ( empty($query) )
+ $search = get_search_query( false );
else
- $post = get_previous_post($in_same_cat, $excluded_categories);
-
- if ( !$post )
- return;
-
- $title = $post->post_title;
+ $search = stripslashes($query);
- if ( empty($post->post_title) )
- $title = __('Previous Post');
+ $permastruct = $wp_rewrite->get_search_permastruct();
- $title = apply_filters('the_title', $title, $post);
- $string = '<a href="'.get_permalink($post->ID).'">';
- $link = str_replace('%title', $title, $link);
- $link = $pre . $string . $link . '</a>';
-
- $format = str_replace('%link', $link, $format);
+ if ( empty( $permastruct ) ) {
+ $link = home_url('?s=' . urlencode($search) );
+ } else {
+ $search = urlencode($search);
+ $search = str_replace('%2F', '/', $search); // %2F(/) is not valid within a URL, send it un-encoded.
+ $link = str_replace( '%search%', $search, $permastruct );
+ $link = home_url( user_trailingslashit( $link, 'search' ) );
+ }
- echo $format;
+ /**
+ * Filter the search permalink.
+ *
+ * @since 3.0.0
+ *
+ * @param string $link Search permalink.
+ * @param string $search The URL-encoded search term.
+ */
+ return apply_filters( 'search_link', $link, $search );
}
-function next_post_link($format='%link »', $link='%title', $in_same_cat = false, $excluded_categories = '') {
- $post = get_next_post($in_same_cat, $excluded_categories);
-
- if ( !$post )
- return;
+/**
+ * Retrieve the permalink for the feed of the search results.
+ *
+ * @since 2.5.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string $search_query Optional. Search query.
+ * @param string $feed Optional. Feed type.
+ * @return string The search results feed permalink.
+ */
+function get_search_feed_link($search_query = '', $feed = '') {
+ global $wp_rewrite;
+ $link = get_search_link($search_query);
- $title = $post->post_title;
+ if ( empty($feed) )
+ $feed = get_default_feed();
- if ( empty($post->post_title) )
- $title = __('Next Post');
+ $permastruct = $wp_rewrite->get_search_permastruct();
- $title = apply_filters('the_title', $title, $post);
- $string = '<a href="'.get_permalink($post->ID).'">';
- $link = str_replace('%title', $title, $link);
- $link = $string . $link . '</a>';
- $format = str_replace('%link', $link, $format);
+ if ( empty($permastruct) ) {
+ $link = add_query_arg('feed', $feed, $link);
+ } else {
+ $link = trailingslashit($link);
+ $link .= "feed/$feed/";
+ }
- echo $format;
+ /**
+ * Filter the search feed link.
+ *
+ * @since 2.5.0
+ *
+ * @param string $link Search feed link.
+ * @param string $feed Feed type.
+ * @param string $type The search type. One of 'posts' or 'comments'.
+ */
+ return apply_filters( 'search_feed_link', $link, $feed, 'posts' );
}
-function get_pagenum_link($pagenum = 1) {
+/**
+ * Retrieve the permalink for the comments feed of the search results.
+ *
+ * @since 2.5.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string $search_query Optional. Search query.
+ * @param string $feed Optional. Feed type.
+ * @return string The comments feed search results permalink.
+ */
+function get_search_comments_feed_link($search_query = '', $feed = '') {
global $wp_rewrite;
- $pagenum = (int) $pagenum;
+ if ( empty($feed) )
+ $feed = get_default_feed();
- $request = remove_query_arg( 'paged' );
+ $link = get_search_feed_link($search_query, $feed);
- $home_root = parse_url(get_option('home'));
- $home_root = $home_root['path'];
- $home_root = preg_quote( trailingslashit( $home_root ), '|' );
+ $permastruct = $wp_rewrite->get_search_permastruct();
- $request = preg_replace('|^'. $home_root . '|', '', $request);
- $request = preg_replace('|^/+|', '', $request);
+ if ( empty($permastruct) )
+ $link = add_query_arg('feed', 'comments-' . $feed, $link);
+ else
+ $link = add_query_arg('withcomments', 1, $link);
- if ( !$wp_rewrite->using_permalinks() || is_admin() ) {
- $base = trailingslashit( get_bloginfo( 'home' ) );
+ /** This filter is documented in wp-includes/link-template.php */
+ return apply_filters( 'search_feed_link', $link, $feed, 'comments' );
+}
- if ( $pagenum > 1 ) {
- $result = add_query_arg( 'paged', $pagenum, $base . $request );
+/**
+ * Retrieves the permalink for a post type archive.
+ *
+ * @since 3.1.0
+ * @since 4.5.0 Support for posts was added.
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string $post_type Post type.
+ * @return string|false The post type archive permalink.
+ */
+function get_post_type_archive_link( $post_type ) {
+ global $wp_rewrite;
+ if ( ! $post_type_obj = get_post_type_object( $post_type ) )
+ return false;
+
+ if ( 'post' === $post_type ) {
+ $show_on_front = get_option( 'show_on_front' );
+ $page_for_posts = get_option( 'page_for_posts' );
+
+ if ( 'page' == $show_on_front && $page_for_posts ) {
+ $link = get_permalink( $page_for_posts );
} else {
- $result = $base . $request;
+ $link = get_home_url();
}
+ /** This filter is documented in wp-includes/link-template.php */
+ return apply_filters( 'post_type_archive_link', $link, $post_type );
+ }
+
+ if ( ! $post_type_obj->has_archive )
+ return false;
+
+ if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) {
+ $struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive;
+ if ( $post_type_obj->rewrite['with_front'] )
+ $struct = $wp_rewrite->front . $struct;
+ else
+ $struct = $wp_rewrite->root . $struct;
+ $link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) );
} else {
- $qs_regex = '|\?.*?$|';
- preg_match( $qs_regex, $request, $qs_match );
+ $link = home_url( '?post_type=' . $post_type );
+ }
- if ( $qs_match[0] ) {
- $query_string = $qs_match[0];
- $request = preg_replace( $qs_regex, '', $request );
- } else {
- $query_string = '';
- }
+ /**
+ * Filter the post type archive permalink.
+ *
+ * @since 3.1.0
+ *
+ * @param string $link The post type archive permalink.
+ * @param string $post_type Post type name.
+ */
+ return apply_filters( 'post_type_archive_link', $link, $post_type );
+}
- $request = preg_replace( '|page/(.+)/?$|', '', $request);
- $request = preg_replace( '|^index\.php|', '', $request);
- $request = ltrim($request, '/');
+/**
+ * Retrieve the permalink for a post type archive feed.
+ *
+ * @since 3.1.0
+ *
+ * @param string $post_type Post type
+ * @param string $feed Optional. Feed type
+ * @return string|false The post type feed permalink.
+ */
+function get_post_type_archive_feed_link( $post_type, $feed = '' ) {
+ $default_feed = get_default_feed();
+ if ( empty( $feed ) )
+ $feed = $default_feed;
+
+ if ( ! $link = get_post_type_archive_link( $post_type ) )
+ return false;
+
+ $post_type_obj = get_post_type_object( $post_type );
+ if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) {
+ $link = trailingslashit( $link );
+ $link .= 'feed/';
+ if ( $feed != $default_feed )
+ $link .= "$feed/";
+ } else {
+ $link = add_query_arg( 'feed', $feed, $link );
+ }
- $base = trailingslashit( get_bloginfo( 'url' ) );
+ /**
+ * Filter the post type archive feed link.
+ *
+ * @since 3.1.0
+ *
+ * @param string $link The post type archive feed link.
+ * @param string $feed Feed type.
+ */
+ return apply_filters( 'post_type_archive_feed_link', $link, $feed );
+}
- if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) )
- $base .= 'index.php/';
+/**
+ * Retrieve URL used for the post preview.
+ *
+ * Get the preview post URL. Allows additional query args to be appended.
+ *
+ * @since 4.4.0
+ *
+ * @param int|WP_Post $post Optional. Post ID or `WP_Post` object. Defaults to global post.
+ * @param array $query_args Optional. Array of additional query args to be appended to the link.
+ * @param string $preview_link Optional. Base preview link to be used if it should differ from the post permalink.
+ * @return string URL used for the post preview.
+ */
+function get_preview_post_link( $post = null, $query_args = array(), $preview_link = '' ) {
+ $post = get_post( $post );
+ if ( ! $post ) {
+ return;
+ }
- if ( $pagenum > 1 ) {
- $request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( 'page/' . $pagenum, 'paged' );
+ $post_type_object = get_post_type_object( $post->post_type );
+ if ( is_post_type_viewable( $post_type_object ) ) {
+ if ( ! $preview_link ) {
+ $preview_link = set_url_scheme( get_permalink( $post ) );
}
- $result = $base . $request . $query_string;
+ $query_args['preview'] = 'true';
+ $preview_link = add_query_arg( $query_args, $preview_link );
}
- return $result;
+ /**
+ * Filter the URL used for a post preview.
+ *
+ * @since 2.0.5
+ * @since 4.0.0 Added the `$post` parameter.
+ *
+ * @param string $preview_link URL used for the post preview.
+ * @param WP_Post $post Post object.
+ */
+ return apply_filters( 'preview_post_link', $preview_link, $post );
}
-function get_next_posts_page_link($max_page = 0) {
- global $paged, $pagenow;
+/**
+ * Retrieve edit posts link for post.
+ *
+ * Can be used within the WordPress loop or outside of it. Can be used with
+ * pages, posts, attachments, and revisions.
+ *
+ * @since 2.3.0
+ *
+ * @param int $id Optional. Post ID.
+ * @param string $context Optional, defaults to display. How to write the '&', defaults to '&'.
+ * @return string|null The edit post link for the given post. null if the post type is invalid or does
+ * not allow an editing UI.
+ */
+function get_edit_post_link( $id = 0, $context = 'display' ) {
+ if ( ! $post = get_post( $id ) )
+ return;
- if ( !is_single() ) {
- if ( !$paged )
- $paged = 1;
- $nextpage = intval($paged) + 1;
- if ( !$max_page || $max_page >= $nextpage )
- return get_pagenum_link($nextpage);
+ if ( 'revision' === $post->post_type )
+ $action = '';
+ elseif ( 'display' == $context )
+ $action = '&action=edit';
+ else
+ $action = '&action=edit';
+
+ $post_type_object = get_post_type_object( $post->post_type );
+ if ( !$post_type_object )
+ return;
+
+ if ( !current_user_can( 'edit_post', $post->ID ) )
+ return;
+
+ if ( $post_type_object->_edit_link ) {
+ $link = admin_url( sprintf( $post_type_object->_edit_link . $action, $post->ID ) );
+ } else {
+ $link = '';
}
-}
-function next_posts($max_page = 0) {
- echo clean_url(get_next_posts_page_link($max_page));
+ /**
+ * Filter the post edit link.
+ *
+ * @since 2.3.0
+ *
+ * @param string $link The edit link.
+ * @param int $post_id Post ID.
+ * @param string $context The link context. If set to 'display' then ampersands
+ * are encoded.
+ */
+ return apply_filters( 'get_edit_post_link', $link, $post->ID, $context );
}
-function next_posts_link($label='Next Page »', $max_page=0) {
- global $paged, $wpdb, $wp_query;
- if ( !$max_page ) {
- $max_page = $wp_query->max_num_pages;
- }
- if ( !$paged )
- $paged = 1;
- $nextpage = intval($paged) + 1;
- if ( (! is_single()) && (empty($paged) || $nextpage <= $max_page) ) {
- echo '<a href="';
- next_posts($max_page);
- echo '">'. preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $label) .'</a>';
+/**
+ * Display edit post link for post.
+ *
+ * @since 1.0.0
+ * @since 4.4.0 The `$class` argument was added.
+ *
+ * @param string $text Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @param int $id Optional. Post ID.
+ * @param string $class Optional. Add custom class to link.
+ */
+function edit_post_link( $text = null, $before = '', $after = '', $id = 0, $class = 'post-edit-link' ) {
+ if ( ! $post = get_post( $id ) ) {
+ return;
}
-}
-function get_previous_posts_page_link() {
- global $paged, $pagenow;
+ if ( ! $url = get_edit_post_link( $post->ID ) ) {
+ return;
+ }
- if ( !is_single() ) {
- $nextpage = intval($paged) - 1;
- if ( $nextpage < 1 )
- $nextpage = 1;
- return get_pagenum_link($nextpage);
+ if ( null === $text ) {
+ $text = __( 'Edit This' );
}
-}
-function previous_posts() {
- echo clean_url(get_previous_posts_page_link());
+ $link = '<a class="' . esc_attr( $class ) . '" href="' . esc_url( $url ) . '">' . $text . '</a>';
+
+ /**
+ * Filter the post edit link anchor tag.
+ *
+ * @since 2.3.0
+ *
+ * @param string $link Anchor tag for the edit link.
+ * @param int $post_id Post ID.
+ * @param string $text Anchor text.
+ */
+ echo $before . apply_filters( 'edit_post_link', $link, $post->ID, $text ) . $after;
}
-function previous_posts_link($label='« Previous Page') {
- global $paged;
- if ( (!is_single()) && ($paged > 1) ) {
- echo '<a href="';
- previous_posts();
- echo '">'. preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $label) .'</a>';
- }
-}
+/**
+ * Retrieve delete posts link for post.
+ *
+ * Can be used within the WordPress loop or outside of it, with any post type.
+ *
+ * @since 2.9.0
+ *
+ * @param int $id Optional. Post ID.
+ * @param string $deprecated Not used.
+ * @param bool $force_delete Whether to bypass trash and force deletion. Default is false.
+ * @return string|void The delete post link URL for the given post.
+ */
+function get_delete_post_link( $id = 0, $deprecated = '', $force_delete = false ) {
+ if ( ! empty( $deprecated ) )
+ _deprecated_argument( __FUNCTION__, '3.0' );
-function posts_nav_link($sep=' — ', $prelabel='« Previous Page', $nxtlabel='Next Page »') {
- global $wp_query;
- if ( !is_singular() ) {
- $max_num_pages = $wp_query->max_num_pages;
- $paged = get_query_var('paged');
+ if ( !$post = get_post( $id ) )
+ return;
- //only have sep if there's both prev and next results
- if ($paged < 2 || $paged >= $max_num_pages) {
- $sep = '';
- }
+ $post_type_object = get_post_type_object( $post->post_type );
+ if ( !$post_type_object )
+ return;
+
+ if ( !current_user_can( 'delete_post', $post->ID ) )
+ return;
+
+ $action = ( $force_delete || !EMPTY_TRASH_DAYS ) ? 'delete' : 'trash';
+
+ $delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) );
+
+ /**
+ * Filter the post delete link.
+ *
+ * @since 2.9.0
+ *
+ * @param string $link The delete link.
+ * @param int $post_id Post ID.
+ * @param bool $force_delete Whether to bypass the trash and force deletion. Default false.
+ */
+ return apply_filters( 'get_delete_post_link', wp_nonce_url( $delete_link, "$action-post_{$post->ID}" ), $post->ID, $force_delete );
+}
+
+/**
+ * Retrieve edit comment link.
+ *
+ * @since 2.3.0
+ *
+ * @param int|WP_Comment $comment_id Optional. Comment ID or WP_Comment object.
+ * @return string|void The edit comment link URL for the given comment.
+ */
+function get_edit_comment_link( $comment_id = 0 ) {
+ $comment = get_comment( $comment_id );
+
+ if ( !current_user_can( 'edit_comment', $comment->comment_ID ) )
+ return;
+
+ $location = admin_url('comment.php?action=editcomment&c=') . $comment->comment_ID;
+
+ /**
+ * Filter the comment edit link.
+ *
+ * @since 2.3.0
+ *
+ * @param string $location The edit link.
+ */
+ return apply_filters( 'get_edit_comment_link', $location );
+}
+
+/**
+ * Display edit comment link with formatting.
+ *
+ * @since 1.0.0
+ *
+ * @param string $text Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ */
+function edit_comment_link( $text = null, $before = '', $after = '' ) {
+ $comment = get_comment();
+
+ if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) {
+ return;
+ }
+
+ if ( null === $text ) {
+ $text = __( 'Edit This' );
+ }
+
+ $link = '<a class="comment-edit-link" href="' . esc_url( get_edit_comment_link( $comment ) ) . '">' . $text . '</a>';
+
+ /**
+ * Filter the comment edit link anchor tag.
+ *
+ * @since 2.3.0
+ *
+ * @param string $link Anchor tag for the edit link.
+ * @param int $comment_id Comment ID.
+ * @param string $text Anchor text.
+ */
+ echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID, $text ) . $after;
+}
+
+/**
+ * Display edit bookmark link.
+ *
+ * @since 2.7.0
+ *
+ * @param int|stdClass $link Optional. Bookmark ID.
+ * @return string|void The edit bookmark link URL.
+ */
+function get_edit_bookmark_link( $link = 0 ) {
+ $link = get_bookmark( $link );
+
+ if ( !current_user_can('manage_links') )
+ return;
+
+ $location = admin_url('link.php?action=edit&link_id=') . $link->link_id;
+
+ /**
+ * Filter the bookmark edit link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $location The edit link.
+ * @param int $link_id Bookmark ID.
+ */
+ return apply_filters( 'get_edit_bookmark_link', $location, $link->link_id );
+}
+
+/**
+ * Display edit bookmark link anchor content.
+ *
+ * @since 2.7.0
+ *
+ * @param string $link Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @param int $bookmark Optional. Bookmark ID.
+ */
+function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) {
+ $bookmark = get_bookmark($bookmark);
+
+ if ( !current_user_can('manage_links') )
+ return;
+
+ if ( empty($link) )
+ $link = __('Edit This');
+
+ $link = '<a href="' . esc_url( get_edit_bookmark_link( $bookmark ) ) . '">' . $link . '</a>';
+
+ /**
+ * Filter the bookmark edit link anchor tag.
+ *
+ * @since 2.7.0
+ *
+ * @param string $link Anchor tag for the edit link.
+ * @param int $link_id Bookmark ID.
+ */
+ echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after;
+}
+
+/**
+ * Retrieve edit user link
+ *
+ * @since 3.5.0
+ *
+ * @param int $user_id Optional. User ID. Defaults to the current user.
+ * @return string URL to edit user page or empty string.
+ */
+function get_edit_user_link( $user_id = null ) {
+ if ( ! $user_id )
+ $user_id = get_current_user_id();
+
+ if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) )
+ return '';
+
+ $user = get_userdata( $user_id );
+
+ if ( ! $user )
+ return '';
+
+ if ( get_current_user_id() == $user->ID )
+ $link = get_edit_profile_url( $user->ID );
+ else
+ $link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) );
+
+ /**
+ * Filter the user edit link.
+ *
+ * @since 3.5.0
+ *
+ * @param string $link The edit link.
+ * @param int $user_id User ID.
+ */
+ return apply_filters( 'get_edit_user_link', $link, $user->ID );
+}
+
+// Navigation links
+
+/**
+ * Retrieve previous post that is adjacent to current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return null|string|WP_Post Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
+ */
+function get_previous_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ return get_adjacent_post( $in_same_term, $excluded_terms, true, $taxonomy );
+}
+
+/**
+ * Retrieve next post that is adjacent to current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return null|string|WP_Post Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
+ */
+function get_next_post( $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ return get_adjacent_post( $in_same_term, $excluded_terms, false, $taxonomy );
+}
+
+/**
+ * Retrieve adjacent post.
+ *
+ * Can either be next or previous post.
+ *
+ * @since 2.5.0
+ *
+ * @global wpdb $wpdb WordPress database abstraction object.
+ *
+ * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param bool $previous Optional. Whether to retrieve previous post.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return null|string|WP_Post Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
+ */
+function get_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
+ global $wpdb;
+
+ if ( ( ! $post = get_post() ) || ! taxonomy_exists( $taxonomy ) )
+ return null;
+
+ $current_post_date = $post->post_date;
+
+ $join = '';
+ $where = '';
+ $adjacent = $previous ? 'previous' : 'next';
+
+ if ( $in_same_term || ! empty( $excluded_terms ) ) {
+ if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) {
+ // back-compat, $excluded_terms used to be $excluded_terms with IDs separated by " and "
+ if ( false !== strpos( $excluded_terms, ' and ' ) ) {
+ _deprecated_argument( __FUNCTION__, '3.3', sprintf( __( 'Use commas instead of %s to separate excluded terms.' ), "'and'" ) );
+ $excluded_terms = explode( ' and ', $excluded_terms );
+ } else {
+ $excluded_terms = explode( ',', $excluded_terms );
+ }
+
+ $excluded_terms = array_map( 'intval', $excluded_terms );
+ }
+
+ if ( $in_same_term ) {
+ $join .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";
+ $where .= $wpdb->prepare( "AND tt.taxonomy = %s", $taxonomy );
+
+ if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) )
+ return '';
+ $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
+
+ // Remove any exclusions from the term array to include.
+ $term_array = array_diff( $term_array, (array) $excluded_terms );
+ $term_array = array_map( 'intval', $term_array );
+
+ if ( ! $term_array || is_wp_error( $term_array ) )
+ return '';
+
+ $where .= " AND tt.term_id IN (" . implode( ',', $term_array ) . ")";
+ }
+
+ /**
+ * Filter the IDs of terms excluded from adjacent post queries.
+ *
+ * The dynamic portion of the hook name, `$adjacent`, refers to the type
+ * of adjacency, 'next' or 'previous'.
+ *
+ * @since 4.4.0
+ *
+ * @param string $excluded_terms Array of excluded term IDs.
+ */
+ $excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms );
+
+ if ( ! empty( $excluded_terms ) ) {
+ $where .= " AND p.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships tr LEFT JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (" . implode( ',', array_map( 'intval', $excluded_terms ) ) . ') )';
+ }
+ }
+
+ // 'post_status' clause depends on the current user.
+ if ( is_user_logged_in() ) {
+ $user_id = get_current_user_id();
+
+ $post_type_object = get_post_type_object( $post->post_type );
+ if ( empty( $post_type_object ) ) {
+ $post_type_cap = $post->post_type;
+ $read_private_cap = 'read_private_' . $post_type_cap . 's';
+ } else {
+ $read_private_cap = $post_type_object->cap->read_private_posts;
+ }
+
+ /*
+ * Results should include private posts belonging to the current user, or private posts where the
+ * current user has the 'read_private_posts' cap.
+ */
+ $private_states = get_post_stati( array( 'private' => true ) );
+ $where .= " AND ( p.post_status = 'publish'";
+ foreach ( (array) $private_states as $state ) {
+ if ( current_user_can( $read_private_cap ) ) {
+ $where .= $wpdb->prepare( " OR p.post_status = %s", $state );
+ } else {
+ $where .= $wpdb->prepare( " OR (p.post_author = %d AND p.post_status = %s)", $user_id, $state );
+ }
+ }
+ $where .= " )";
+ } else {
+ $where .= " AND p.post_status = 'publish'";
+ }
+
+ $op = $previous ? '<' : '>';
+ $order = $previous ? 'DESC' : 'ASC';
+
+ /**
+ * Filter the JOIN clause in the SQL for an adjacent post query.
+ *
+ * The dynamic portion of the hook name, `$adjacent`, refers to the type
+ * of adjacency, 'next' or 'previous'.
+ *
+ * @since 2.5.0
+ * @since 4.4.0 Added the `$taxonomy` and `$post` parameters.
+ *
+ * @param string $join The JOIN clause in the SQL.
+ * @param bool $in_same_term Whether post should be in a same taxonomy term.
+ * @param array $excluded_terms Array of excluded term IDs.
+ * @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true.
+ * @param WP_Post $post WP_Post object.
+ */
+ $join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms, $taxonomy, $post );
+
+ /**
+ * Filter the WHERE clause in the SQL for an adjacent post query.
+ *
+ * The dynamic portion of the hook name, `$adjacent`, refers to the type
+ * of adjacency, 'next' or 'previous'.
+ *
+ * @since 2.5.0
+ * @since 4.4.0 Added the `$taxonomy` and `$post` parameters.
+ *
+ * @param string $where The `WHERE` clause in the SQL.
+ * @param bool $in_same_term Whether post should be in a same taxonomy term.
+ * @param array $excluded_terms Array of excluded term IDs.
+ * @param string $taxonomy Taxonomy. Used to identify the term used when `$in_same_term` is true.
+ * @param WP_Post $post WP_Post object.
+ */
+ $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare( "WHERE p.post_date $op %s AND p.post_type = %s $where", $current_post_date, $post->post_type ), $in_same_term, $excluded_terms, $taxonomy, $post );
+
+ /**
+ * Filter the ORDER BY clause in the SQL for an adjacent post query.
+ *
+ * The dynamic portion of the hook name, `$adjacent`, refers to the type
+ * of adjacency, 'next' or 'previous'.
+ *
+ * @since 2.5.0
+ * @since 4.4.0 Added the `$post` parameter.
+ *
+ * @param string $order_by The `ORDER BY` clause in the SQL.
+ * @param WP_Post $post WP_Post object.
+ */
+ $sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1", $post );
+
+ $query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort";
+ $query_key = 'adjacent_post_' . md5( $query );
+ $result = wp_cache_get( $query_key, 'counts' );
+ if ( false !== $result ) {
+ if ( $result )
+ $result = get_post( $result );
+ return $result;
+ }
+
+ $result = $wpdb->get_var( $query );
+ if ( null === $result )
+ $result = '';
+
+ wp_cache_set( $query_key, $result, 'counts' );
+
+ if ( $result )
+ $result = get_post( $result );
+
+ return $result;
+}
+
+/**
+ * Get adjacent post relational link.
+ *
+ * Can either be next or previous post relational link.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param bool $previous Optional. Whether to display link to previous or next post. Default true.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return string|void The adjacent post relational link URL.
+ */
+function get_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
+ if ( $previous && is_attachment() && $post = get_post() )
+ $post = get_post( $post->post_parent );
+ else
+ $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
+
+ if ( empty( $post ) )
+ return;
+
+ $post_title = the_title_attribute( array( 'echo' => false, 'post' => $post ) );
+
+ if ( empty( $post_title ) )
+ $post_title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
+
+ $date = mysql2date( get_option( 'date_format' ), $post->post_date );
+
+ $title = str_replace( '%title', $post_title, $title );
+ $title = str_replace( '%date', $date, $title );
+
+ $link = $previous ? "<link rel='prev' title='" : "<link rel='next' title='";
+ $link .= esc_attr( $title );
+ $link .= "' href='" . get_permalink( $post ) . "' />\n";
+
+ $adjacent = $previous ? 'previous' : 'next';
+
+ /**
+ * Filter the adjacent post relational link.
+ *
+ * The dynamic portion of the hook name, `$adjacent`, refers to the type
+ * of adjacency, 'next' or 'previous'.
+ *
+ * @since 2.8.0
+ *
+ * @param string $link The relational link.
+ */
+ return apply_filters( "{$adjacent}_post_rel_link", $link );
+}
+
+/**
+ * Display relational links for the posts adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ */
+function adjacent_posts_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy );
+ echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy );
+}
+
+/**
+ * Display relational links for the posts adjacent to the current post for single post pages.
+ *
+ * This is meant to be attached to actions like 'wp_head'. Do not call this directly in plugins or theme templates.
+ * @since 3.0.0
+ *
+ */
+function adjacent_posts_rel_link_wp_head() {
+ if ( ! is_single() || is_attachment() ) {
+ return;
+ }
+ adjacent_posts_rel_link();
+}
+
+/**
+ * Display relational link for the next post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ */
+function next_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy );
+}
+
+/**
+ * Display relational link for the previous post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default true.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ */
+function prev_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy );
+}
+
+/**
+ * Retrieve boundary post.
+ *
+ * Boundary being either the first or last post by publish date within the constraints specified
+ * by $in_same_term or $excluded_terms.
+ *
+ * @since 2.8.0
+ *
+ * @param bool $in_same_term Optional. Whether returned post should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param bool $start Optional. Whether to retrieve first or last post.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return null|array Array containing the boundary post object if successful, null otherwise.
+ */
+function get_boundary_post( $in_same_term = false, $excluded_terms = '', $start = true, $taxonomy = 'category' ) {
+ $post = get_post();
+ if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) )
+ return null;
+
+ $query_args = array(
+ 'posts_per_page' => 1,
+ 'order' => $start ? 'ASC' : 'DESC',
+ 'update_post_term_cache' => false,
+ 'update_post_meta_cache' => false
+ );
+
+ $term_array = array();
+
+ if ( ! is_array( $excluded_terms ) ) {
+ if ( ! empty( $excluded_terms ) )
+ $excluded_terms = explode( ',', $excluded_terms );
+ else
+ $excluded_terms = array();
+ }
+
+ if ( $in_same_term || ! empty( $excluded_terms ) ) {
+ if ( $in_same_term )
+ $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
+
+ if ( ! empty( $excluded_terms ) ) {
+ $excluded_terms = array_map( 'intval', $excluded_terms );
+ $excluded_terms = array_diff( $excluded_terms, $term_array );
+
+ $inverse_terms = array();
+ foreach ( $excluded_terms as $excluded_term )
+ $inverse_terms[] = $excluded_term * -1;
+ $excluded_terms = $inverse_terms;
+ }
+
+ $query_args[ 'tax_query' ] = array( array(
+ 'taxonomy' => $taxonomy,
+ 'terms' => array_merge( $term_array, $excluded_terms )
+ ) );
+ }
+
+ return get_posts( $query_args );
+}
+
+/**
+ * Get previous post link that is adjacent to the current post.
+ *
+ * @since 3.7.0
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return string The link URL of the previous post in relation to the current post.
+ */
+function get_previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, true, $taxonomy );
+}
+
+/**
+ * Display previous post link that is adjacent to the current post.
+ *
+ * @since 1.5.0
+ * @see get_previous_post_link()
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ */
+function previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ echo get_previous_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
+}
+
+/**
+ * Get next post link that is adjacent to the current post.
+ *
+ * @since 3.7.0
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return string The link URL of the next post in relation to the current post.
+ */
+function get_next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, false, $taxonomy );
+}
+
+/**
+ * Display next post link that is adjacent to the current post.
+ *
+ * @since 1.5.0
+ * @see get_next_post_link()
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ */
+function next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
+ echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
+}
+
+/**
+ * Get adjacent post link.
+ *
+ * Can be either next post link or previous.
+ *
+ * @since 3.7.0
+ *
+ * @param string $format Link anchor format.
+ * @param string $link Link permalink format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded terms IDs.
+ * @param bool $previous Optional. Whether to display link to previous or next post. Default true.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ * @return string The link URL of the previous or next post in relation to the current post.
+ */
+function get_adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
+ if ( $previous && is_attachment() )
+ $post = get_post( get_post()->post_parent );
+ else
+ $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
+
+ if ( ! $post ) {
+ $output = '';
+ } else {
+ $title = $post->post_title;
+
+ if ( empty( $post->post_title ) )
+ $title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
+
+ /** This filter is documented in wp-includes/post-template.php */
+ $title = apply_filters( 'the_title', $title, $post->ID );
+
+ $date = mysql2date( get_option( 'date_format' ), $post->post_date );
+ $rel = $previous ? 'prev' : 'next';
+
+ $string = '<a href="' . get_permalink( $post ) . '" rel="'.$rel.'">';
+ $inlink = str_replace( '%title', $title, $link );
+ $inlink = str_replace( '%date', $date, $inlink );
+ $inlink = $string . $inlink . '</a>';
+
+ $output = str_replace( '%link', $inlink, $format );
+ }
+
+ $adjacent = $previous ? 'previous' : 'next';
+
+ /**
+ * Filter the adjacent post link.
+ *
+ * The dynamic portion of the hook name, `$adjacent`, refers to the type
+ * of adjacency, 'next' or 'previous'.
+ *
+ * @since 2.6.0
+ * @since 4.2.0 Added the `$adjacent` parameter.
+ *
+ * @param string $output The adjacent post link.
+ * @param string $format Link anchor format.
+ * @param string $link Link permalink format.
+ * @param WP_Post $post The adjacent post.
+ * @param string $adjacent Whether the post is previous or next.
+ */
+ return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post, $adjacent );
+}
+
+/**
+ * Display adjacent post link.
+ *
+ * Can be either next post link or previous.
+ *
+ * @since 2.5.0
+ *
+ * @param string $format Link anchor format.
+ * @param string $link Link permalink format.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded category IDs.
+ * @param bool $previous Optional. Whether to display link to previous or next post. Default true.
+ * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'.
+ */
+function adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
+ echo get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, $previous, $taxonomy );
+}
+
+/**
+ * Retrieve links for page numbers.
+ *
+ * @since 1.5.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param int $pagenum Optional. Page ID.
+ * @param bool $escape Optional. Whether to escape the URL for display, with esc_url(). Defaults to true.
+ * Otherwise, prepares the URL with esc_url_raw().
+ * @return string The link URL for the given page number.
+ */
+function get_pagenum_link($pagenum = 1, $escape = true ) {
+ global $wp_rewrite;
+
+ $pagenum = (int) $pagenum;
+
+ $request = remove_query_arg( 'paged' );
+
+ $home_root = parse_url(home_url());
+ $home_root = ( isset($home_root['path']) ) ? $home_root['path'] : '';
+ $home_root = preg_quote( $home_root, '|' );
+
+ $request = preg_replace('|^'. $home_root . '|i', '', $request);
+ $request = preg_replace('|^/+|', '', $request);
+
+ if ( !$wp_rewrite->using_permalinks() || is_admin() ) {
+ $base = trailingslashit( get_bloginfo( 'url' ) );
+
+ if ( $pagenum > 1 ) {
+ $result = add_query_arg( 'paged', $pagenum, $base . $request );
+ } else {
+ $result = $base . $request;
+ }
+ } else {
+ $qs_regex = '|\?.*?$|';
+ preg_match( $qs_regex, $request, $qs_match );
+
+ if ( !empty( $qs_match[0] ) ) {
+ $query_string = $qs_match[0];
+ $request = preg_replace( $qs_regex, '', $request );
+ } else {
+ $query_string = '';
+ }
+
+ $request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request);
+ $request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request);
+ $request = ltrim($request, '/');
+
+ $base = trailingslashit( get_bloginfo( 'url' ) );
+
+ if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) )
+ $base .= $wp_rewrite->index . '/';
+
+ if ( $pagenum > 1 ) {
+ $request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . "/" . $pagenum, 'paged' );
+ }
+
+ $result = $base . $request . $query_string;
+ }
+
+ /**
+ * Filter the page number link for the current request.
+ *
+ * @since 2.5.0
+ *
+ * @param string $result The page number link.
+ */
+ $result = apply_filters( 'get_pagenum_link', $result );
+
+ if ( $escape )
+ return esc_url( $result );
+ else
+ return esc_url_raw( $result );
+}
+
+/**
+ * Retrieve next posts page link.
+ *
+ * Backported from 2.1.3 to 2.0.10.
+ *
+ * @since 2.0.10
+ *
+ * @global int $paged
+ *
+ * @param int $max_page Optional. Max pages.
+ * @return string|void The link URL for next posts page.
+ */
+function get_next_posts_page_link($max_page = 0) {
+ global $paged;
+
+ if ( !is_single() ) {
+ if ( !$paged )
+ $paged = 1;
+ $nextpage = intval($paged) + 1;
+ if ( !$max_page || $max_page >= $nextpage )
+ return get_pagenum_link($nextpage);
+ }
+}
+
+/**
+ * Display or return the next posts page link.
+ *
+ * @since 0.71
+ *
+ * @param int $max_page Optional. Max pages.
+ * @param bool $echo Optional. Echo or return;
+ * @return string|void The link URL for next posts page if `$echo = false`.
+ */
+function next_posts( $max_page = 0, $echo = true ) {
+ $output = esc_url( get_next_posts_page_link( $max_page ) );
+
+ if ( $echo )
+ echo $output;
+ else
+ return $output;
+}
+
+/**
+ * Return the next posts page link.
+ *
+ * @since 2.7.0
+ *
+ * @global int $paged
+ * @global WP_Query $wp_query
+ *
+ * @param string $label Content for link text.
+ * @param int $max_page Optional. Max pages.
+ * @return string|void HTML-formatted next posts page link.
+ */
+function get_next_posts_link( $label = null, $max_page = 0 ) {
+ global $paged, $wp_query;
+
+ if ( !$max_page )
+ $max_page = $wp_query->max_num_pages;
+
+ if ( !$paged )
+ $paged = 1;
+
+ $nextpage = intval($paged) + 1;
+
+ if ( null === $label )
+ $label = __( 'Next Page »' );
+
+ if ( !is_single() && ( $nextpage <= $max_page ) ) {
+ /**
+ * Filter the anchor tag attributes for the next posts page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $attributes Attributes for the anchor tag.
+ */
+ $attr = apply_filters( 'next_posts_link_attributes', '' );
+
+ return '<a href="' . next_posts( $max_page, false ) . "\" $attr>" . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) . '</a>';
+ }
+}
+
+/**
+ * Display the next posts page link.
+ *
+ * @since 0.71
+ *
+ * @param string $label Content for link text.
+ * @param int $max_page Optional. Max pages.
+ */
+function next_posts_link( $label = null, $max_page = 0 ) {
+ echo get_next_posts_link( $label, $max_page );
+}
+
+/**
+ * Retrieve previous posts page link.
+ *
+ * Will only return string, if not on a single page or post.
+ *
+ * Backported to 2.0.10 from 2.1.3.
+ *
+ * @since 2.0.10
+ *
+ * @global int $paged
+ *
+ * @return string|void The link for the previous posts page.
+ */
+function get_previous_posts_page_link() {
+ global $paged;
+
+ if ( !is_single() ) {
+ $nextpage = intval($paged) - 1;
+ if ( $nextpage < 1 )
+ $nextpage = 1;
+ return get_pagenum_link($nextpage);
+ }
+}
+
+/**
+ * Display or return the previous posts page link.
+ *
+ * @since 0.71
+ *
+ * @param bool $echo Optional. Echo or return;
+ * @return string|void The previous posts page link if `$echo = false`.
+ */
+function previous_posts( $echo = true ) {
+ $output = esc_url( get_previous_posts_page_link() );
+
+ if ( $echo )
+ echo $output;
+ else
+ return $output;
+}
+
+/**
+ * Return the previous posts page link.
+ *
+ * @since 2.7.0
+ *
+ * @global int $paged
+ *
+ * @param string $label Optional. Previous page link text.
+ * @return string|void HTML-formatted previous page link.
+ */
+function get_previous_posts_link( $label = null ) {
+ global $paged;
+
+ if ( null === $label )
+ $label = __( '« Previous Page' );
+
+ if ( !is_single() && $paged > 1 ) {
+ /**
+ * Filter the anchor tag attributes for the previous posts page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $attributes Attributes for the anchor tag.
+ */
+ $attr = apply_filters( 'previous_posts_link_attributes', '' );
+ return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) .'</a>';
+ }
+}
+
+/**
+ * Display the previous posts page link.
+ *
+ * @since 0.71
+ *
+ * @param string $label Optional. Previous page link text.
+ */
+function previous_posts_link( $label = null ) {
+ echo get_previous_posts_link( $label );
+}
+
+/**
+ * Return post pages link navigation for previous and next pages.
+ *
+ * @since 2.8.0
+ *
+ * @global WP_Query $wp_query
+ *
+ * @param string|array $args Optional args.
+ * @return string The posts link navigation.
+ */
+function get_posts_nav_link( $args = array() ) {
+ global $wp_query;
+
+ $return = '';
+
+ if ( !is_singular() ) {
+ $defaults = array(
+ 'sep' => ' — ',
+ 'prelabel' => __('« Previous Page'),
+ 'nxtlabel' => __('Next Page »'),
+ );
+ $args = wp_parse_args( $args, $defaults );
+
+ $max_num_pages = $wp_query->max_num_pages;
+ $paged = get_query_var('paged');
+
+ //only have sep if there's both prev and next results
+ if ($paged < 2 || $paged >= $max_num_pages) {
+ $args['sep'] = '';
+ }
if ( $max_num_pages > 1 ) {
- previous_posts_link($prelabel);
- echo preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $sep);
- next_posts_link($nxtlabel);
+ $return = get_previous_posts_link($args['prelabel']);
+ $return .= preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $args['sep']);
+ $return .= get_next_posts_link($args['nxtlabel']);
+ }
+ }
+ return $return;
+
+}
+
+/**
+ * Display post pages link navigation for previous and next pages.
+ *
+ * @since 0.71
+ *
+ * @param string $sep Optional. Separator for posts navigation links.
+ * @param string $prelabel Optional. Label for previous pages.
+ * @param string $nxtlabel Optional Label for next pages.
+ */
+function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) {
+ $args = array_filter( compact('sep', 'prelabel', 'nxtlabel') );
+ echo get_posts_nav_link($args);
+}
+
+/**
+ * Return navigation to next/previous post when applicable.
+ *
+ * @since 4.1.0
+ * @since 4.4.0 Introduced the `in_same_term`, `excluded_terms`, and `taxonomy` arguments.
+ *
+ * @param array $args {
+ * Optional. Default post navigation arguments. Default empty array.
+ *
+ * @type string $prev_text Anchor text to display in the previous post link. Default '%title'.
+ * @type string $next_text Anchor text to display in the next post link. Default '%title'.
+ * @type bool $in_same_term Whether link should be in a same taxonomy term. Default false.
+ * @type array|string $excluded_terms Array or comma-separated list of excluded term IDs. Default empty.
+ * @type string $taxonomy Taxonomy, if `$in_same_term` is true. Default 'category'.
+ * @type string $screen_reader_text Screen reader text for nav element. Default 'Post navigation'.
+ * }
+ * @return string Markup for post links.
+ */
+function get_the_post_navigation( $args = array() ) {
+ $args = wp_parse_args( $args, array(
+ 'prev_text' => '%title',
+ 'next_text' => '%title',
+ 'in_same_term' => false,
+ 'excluded_terms' => '',
+ 'taxonomy' => 'category',
+ 'screen_reader_text' => __( 'Post navigation' ),
+ ) );
+
+ $navigation = '';
+
+ $previous = get_previous_post_link(
+ '<div class="nav-previous">%link</div>',
+ $args['prev_text'],
+ $args['in_same_term'],
+ $args['excluded_terms'],
+ $args['taxonomy']
+ );
+
+ $next = get_next_post_link(
+ '<div class="nav-next">%link</div>',
+ $args['next_text'],
+ $args['in_same_term'],
+ $args['excluded_terms'],
+ $args['taxonomy']
+ );
+
+ // Only add markup if there's somewhere to navigate to.
+ if ( $previous || $next ) {
+ $navigation = _navigation_markup( $previous . $next, 'post-navigation', $args['screen_reader_text'] );
+ }
+
+ return $navigation;
+}
+
+/**
+ * Display navigation to next/previous post when applicable.
+ *
+ * @since 4.1.0
+ *
+ * @param array $args Optional. See {@see get_the_post_navigation()} for available
+ * arguments. Default empty array.
+ */
+function the_post_navigation( $args = array() ) {
+ echo get_the_post_navigation( $args );
+}
+
+/**
+ * Return navigation to next/previous set of posts when applicable.
+ *
+ * @since 4.1.0
+ *
+ * @global WP_Query $wp_query WordPress Query object.
+ *
+ * @param array $args {
+ * Optional. Default posts navigation arguments. Default empty array.
+ *
+ * @type string $prev_text Anchor text to display in the previous posts link.
+ * Default 'Older posts'.
+ * @type string $next_text Anchor text to display in the next posts link.
+ * Default 'Newer posts'.
+ * @type string $screen_reader_text Screen reader text for nav element.
+ * Default 'Posts navigation'.
+ * }
+ * @return string Markup for posts links.
+ */
+function get_the_posts_navigation( $args = array() ) {
+ $navigation = '';
+
+ // Don't print empty markup if there's only one page.
+ if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
+ $args = wp_parse_args( $args, array(
+ 'prev_text' => __( 'Older posts' ),
+ 'next_text' => __( 'Newer posts' ),
+ 'screen_reader_text' => __( 'Posts navigation' ),
+ ) );
+
+ $next_link = get_previous_posts_link( $args['next_text'] );
+ $prev_link = get_next_posts_link( $args['prev_text'] );
+
+ if ( $prev_link ) {
+ $navigation .= '<div class="nav-previous">' . $prev_link . '</div>';
+ }
+
+ if ( $next_link ) {
+ $navigation .= '<div class="nav-next">' . $next_link . '</div>';
+ }
+
+ $navigation = _navigation_markup( $navigation, 'posts-navigation', $args['screen_reader_text'] );
+ }
+
+ return $navigation;
+}
+
+/**
+ * Display navigation to next/previous set of posts when applicable.
+ *
+ * @since 4.1.0
+ *
+ * @param array $args Optional. See {@see get_the_posts_navigation()} for available
+ * arguments. Default empty array.
+ */
+function the_posts_navigation( $args = array() ) {
+ echo get_the_posts_navigation( $args );
+}
+
+/**
+ * Return a paginated navigation to next/previous set of posts,
+ * when applicable.
+ *
+ * @since 4.1.0
+ *
+ * @param array $args {
+ * Optional. Default pagination arguments, {@see paginate_links()}.
+ *
+ * @type string $screen_reader_text Screen reader text for navigation element.
+ * Default 'Posts navigation'.
+ * }
+ * @return string Markup for pagination links.
+ */
+function get_the_posts_pagination( $args = array() ) {
+ $navigation = '';
+
+ // Don't print empty markup if there's only one page.
+ if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
+ $args = wp_parse_args( $args, array(
+ 'mid_size' => 1,
+ 'prev_text' => _x( 'Previous', 'previous post' ),
+ 'next_text' => _x( 'Next', 'next post' ),
+ 'screen_reader_text' => __( 'Posts navigation' ),
+ ) );
+
+ // Make sure we get a string back. Plain is the next best thing.
+ if ( isset( $args['type'] ) && 'array' == $args['type'] ) {
+ $args['type'] = 'plain';
+ }
+
+ // Set up paginated links.
+ $links = paginate_links( $args );
+
+ if ( $links ) {
+ $navigation = _navigation_markup( $links, 'pagination', $args['screen_reader_text'] );
+ }
+ }
+
+ return $navigation;
+}
+
+/**
+ * Display a paginated navigation to next/previous set of posts,
+ * when applicable.
+ *
+ * @since 4.1.0
+ *
+ * @param array $args Optional. See {@see get_the_posts_pagination()} for available arguments.
+ * Default empty array.
+ */
+function the_posts_pagination( $args = array() ) {
+ echo get_the_posts_pagination( $args );
+}
+
+/**
+ * Wraps passed links in navigational markup.
+ *
+ * @since 4.1.0
+ * @access private
+ *
+ * @param string $links Navigational links.
+ * @param string $class Optional. Custom class for nav element. Default: 'posts-navigation'.
+ * @param string $screen_reader_text Optional. Screen reader text for nav element. Default: 'Posts navigation'.
+ * @return string Navigation template tag.
+ */
+function _navigation_markup( $links, $class = 'posts-navigation', $screen_reader_text = '' ) {
+ if ( empty( $screen_reader_text ) ) {
+ $screen_reader_text = __( 'Posts navigation' );
+ }
+
+ $template = '
+ <nav class="navigation %1$s" role="navigation">
+ <h2 class="screen-reader-text">%2$s</h2>
+ <div class="nav-links">%3$s</div>
+ </nav>';
+
+ /**
+ * Filter the navigation markup template.
+ *
+ * Note: The filtered template HTML must contain specifiers for the navigation
+ * class (%1$s), the screen-reader-text value (%2$s), and placement of the
+ * navigation links (%3$s):
+ *
+ * <nav class="navigation %1$s" role="navigation">
+ * <h2 class="screen-reader-text">%2$s</h2>
+ * <div class="nav-links">%3$s</div>
+ * </nav>
+ *
+ * @since 4.4.0
+ *
+ * @param string $template The default template.
+ * @param string $class The class passed by the calling function.
+ * @return string Navigation template.
+ */
+ $template = apply_filters( 'navigation_markup_template', $template, $class );
+
+ return sprintf( $template, sanitize_html_class( $class ), esc_html( $screen_reader_text ), $links );
+}
+
+/**
+ * Retrieve comments page number link.
+ *
+ * @since 2.7.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param int $pagenum Optional. Page number.
+ * @param int $max_page Optional. The maximum number of comment pages.
+ * @return string The comments page number link URL.
+ */
+function get_comments_pagenum_link( $pagenum = 1, $max_page = 0 ) {
+ global $wp_rewrite;
+
+ $pagenum = (int) $pagenum;
+
+ $result = get_permalink();
+
+ if ( 'newest' == get_option('default_comments_page') ) {
+ if ( $pagenum != $max_page ) {
+ if ( $wp_rewrite->using_permalinks() )
+ $result = user_trailingslashit( trailingslashit($result) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged');
+ else
+ $result = add_query_arg( 'cpage', $pagenum, $result );
+ }
+ } elseif ( $pagenum > 1 ) {
+ if ( $wp_rewrite->using_permalinks() )
+ $result = user_trailingslashit( trailingslashit($result) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged');
+ else
+ $result = add_query_arg( 'cpage', $pagenum, $result );
+ }
+
+ $result .= '#comments';
+
+ /**
+ * Filter the comments page number link for the current request.
+ *
+ * @since 2.7.0
+ *
+ * @param string $result The comments page number link.
+ */
+ return apply_filters( 'get_comments_pagenum_link', $result );
+}
+
+/**
+ * Return the link to next comments page.
+ *
+ * @since 2.7.1
+ *
+ * @global WP_Query $wp_query
+ *
+ * @param string $label Optional. Label for link text.
+ * @param int $max_page Optional. Max page.
+ * @return string|void HTML-formatted link for the next page of comments.
+ */
+function get_next_comments_link( $label = '', $max_page = 0 ) {
+ global $wp_query;
+
+ if ( ! is_singular() )
+ return;
+
+ $page = get_query_var('cpage');
+
+ if ( ! $page ) {
+ $page = 1;
+ }
+
+ $nextpage = intval($page) + 1;
+
+ if ( empty($max_page) )
+ $max_page = $wp_query->max_num_comment_pages;
+
+ if ( empty($max_page) )
+ $max_page = get_comment_pages_count();
+
+ if ( $nextpage > $max_page )
+ return;
+
+ if ( empty($label) )
+ $label = __('Newer Comments »');
+
+ /**
+ * Filter the anchor tag attributes for the next comments page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $attributes Attributes for the anchor tag.
+ */
+ return '<a href="' . esc_url( get_comments_pagenum_link( $nextpage, $max_page ) ) . '" ' . apply_filters( 'next_comments_link_attributes', '' ) . '>'. preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) .'</a>';
+}
+
+/**
+ * Display the link to next comments page.
+ *
+ * @since 2.7.0
+ *
+ * @param string $label Optional. Label for link text.
+ * @param int $max_page Optional. Max page.
+ */
+function next_comments_link( $label = '', $max_page = 0 ) {
+ echo get_next_comments_link( $label, $max_page );
+}
+
+/**
+ * Return the previous comments page link.
+ *
+ * @since 2.7.1
+ *
+ * @param string $label Optional. Label for comments link text.
+ * @return string|void HTML-formatted link for the previous page of comments.
+ */
+function get_previous_comments_link( $label = '' ) {
+ if ( ! is_singular() )
+ return;
+
+ $page = get_query_var('cpage');
+
+ if ( intval($page) <= 1 )
+ return;
+
+ $prevpage = intval($page) - 1;
+
+ if ( empty($label) )
+ $label = __('« Older Comments');
+
+ /**
+ * Filter the anchor tag attributes for the previous comments page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $attributes Attributes for the anchor tag.
+ */
+ return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) .'</a>';
+}
+
+/**
+ * Display the previous comments page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $label Optional. Label for comments link text.
+ */
+function previous_comments_link( $label = '' ) {
+ echo get_previous_comments_link( $label );
+}
+
+/**
+ * Create pagination links for the comments on the current post.
+ *
+ * @see paginate_links()
+ * @since 2.7.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param string|array $args Optional args. See paginate_links().
+ * @return string|void Markup for pagination links.
+ */
+function paginate_comments_links($args = array()) {
+ global $wp_rewrite;
+
+ if ( ! is_singular() )
+ return;
+
+ $page = get_query_var('cpage');
+ if ( !$page )
+ $page = 1;
+ $max_page = get_comment_pages_count();
+ $defaults = array(
+ 'base' => add_query_arg( 'cpage', '%#%' ),
+ 'format' => '',
+ 'total' => $max_page,
+ 'current' => $page,
+ 'echo' => true,
+ 'add_fragment' => '#comments'
+ );
+ if ( $wp_rewrite->using_permalinks() )
+ $defaults['base'] = user_trailingslashit(trailingslashit(get_permalink()) . $wp_rewrite->comments_pagination_base . '-%#%', 'commentpaged');
+
+ $args = wp_parse_args( $args, $defaults );
+ $page_links = paginate_links( $args );
+
+ if ( $args['echo'] )
+ echo $page_links;
+ else
+ return $page_links;
+}
+
+/**
+ * Returns navigation to next/previous set of comments when applicable.
+ *
+ * @since 4.4.0
+ *
+ * @param array $args {
+ * Optional. Default comments navigation arguments.
+ *
+ * @type string $prev_text Anchor text to display in the previous comments link. Default 'Older comments'.
+ * @type string $next_text Anchor text to display in the next comments link. Default 'Newer comments'.
+ * @type string $screen_reader_text Screen reader text for nav element. Default 'Comments navigation'.
+ * }
+ * @return string Markup for comments links.
+ */
+function get_the_comments_navigation( $args = array() ) {
+ $navigation = '';
+
+ // Are there comments to navigate through?
+ if ( get_comment_pages_count() > 1 ) {
+ $args = wp_parse_args( $args, array(
+ 'prev_text' => __( 'Older comments' ),
+ 'next_text' => __( 'Newer comments' ),
+ 'screen_reader_text' => __( 'Comments navigation' ),
+ ) );
+
+ $prev_link = get_previous_comments_link( $args['prev_text'] );
+ $next_link = get_next_comments_link( $args['next_text'] );
+
+ if ( $prev_link ) {
+ $navigation .= '<div class="nav-previous">' . $prev_link . '</div>';
+ }
+
+ if ( $next_link ) {
+ $navigation .= '<div class="nav-next">' . $next_link . '</div>';
+ }
+
+ $navigation = _navigation_markup( $navigation, 'comment-navigation', $args['screen_reader_text'] );
+ }
+
+ return $navigation;
+}
+
+/**
+ * Displays navigation to next/previous set of comments when applicable.
+ *
+ * @since 4.4.0
+ *
+ * @param array $args See {@see get_the_comments_navigation()} for available arguments.
+ */
+function the_comments_navigation( $args = array() ) {
+ echo get_the_comments_navigation( $args );
+}
+
+/**
+ * Returns a paginated navigation to next/previous set of comments,
+ * when applicable.
+ *
+ * @since 4.4.0
+ *
+ * @see paginate_comments_links()
+ *
+ * @param array $args {
+ * Optional. Default pagination arguments.
+ *
+ * @type string $screen_reader_text Screen reader text for nav element. Default 'Comments navigation'.
+ * }
+ * @return string Markup for pagination links.
+ */
+function get_the_comments_pagination( $args = array() ) {
+ $navigation = '';
+ $args = wp_parse_args( $args, array(
+ 'screen_reader_text' => __( 'Comments navigation' ),
+ ) );
+ $args['echo'] = false;
+
+ // Make sure we get plain links, so we get a string we can work with.
+ $args['type'] = 'plain';
+
+ $links = paginate_comments_links( $args );
+
+ if ( $links ) {
+ $navigation = _navigation_markup( $links, 'comments-pagination', $args['screen_reader_text'] );
+ }
+
+ return $navigation;
+}
+
+/**
+ * Displays a paginated navigation to next/previous set of comments,
+ * when applicable.
+ *
+ * @since 4.4.0
+ *
+ * @param array $args See {@see get_the_comments_pagination()} for available arguments.
+ */
+function the_comments_pagination( $args = array() ) {
+ echo get_the_comments_pagination( $args );
+}
+
+/**
+ * Retrieve the Press This bookmarklet link.
+ *
+ * Use this in 'a' element 'href' attribute.
+ *
+ * @since 2.6.0
+ *
+ * @global bool $is_IE
+ * @global string $wp_version
+ * @global WP_Press_This $wp_press_this
+ *
+ * @return string The Press This bookmarklet link URL.
+ */
+function get_shortcut_link() {
+ global $is_IE, $wp_version;
+
+ include_once( ABSPATH . 'wp-admin/includes/class-wp-press-this.php' );
+ $bookmarklet_version = $GLOBALS['wp_press_this']->version;
+ $link = '';
+
+ if ( $is_IE ) {
+ /**
+ * Return the old/shorter bookmarklet code for MSIE 8 and lower,
+ * since they only support a max length of ~2000 characters for
+ * bookmark[let] URLs, which is way to small for our smarter one.
+ * Do update the version number so users do not get the "upgrade your
+ * bookmarklet" notice when using PT in those browsers.
+ */
+ $ua = $_SERVER['HTTP_USER_AGENT'];
+
+ if ( ! empty( $ua ) && preg_match( '/\bMSIE (\d)/', $ua, $matches ) && (int) $matches[1] <= 8 ) {
+ $url = wp_json_encode( admin_url( 'press-this.php' ) );
+
+ $link = 'javascript:var d=document,w=window,e=w.getSelection,k=d.getSelection,x=d.selection,' .
+ 's=(e?e():(k)?k():(x?x.createRange().text:0)),f=' . $url . ',l=d.location,e=encodeURIComponent,' .
+ 'u=f+"?u="+e(l.href)+"&t="+e(d.title)+"&s="+e(s)+"&v=' . $bookmarklet_version . '";' .
+ 'a=function(){if(!w.open(u,"t","toolbar=0,resizable=1,scrollbars=1,status=1,width=600,height=700"))l.href=u;};' .
+ 'if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else a();void(0)';
+ }
+ }
+
+ if ( empty( $link ) ) {
+ $src = @file_get_contents( ABSPATH . 'wp-admin/js/bookmarklet.min.js' );
+
+ if ( $src ) {
+ $url = wp_json_encode( admin_url( 'press-this.php' ) . '?v=' . $bookmarklet_version );
+ $link = 'javascript:' . str_replace( 'window.pt_url', $url, $src );
+ }
+ }
+
+ $link = str_replace( array( "\r", "\n", "\t" ), '', $link );
+
+ /**
+ * Filter the Press This bookmarklet link.
+ *
+ * @since 2.6.0
+ *
+ * @param string $link The Press This bookmarklet link.
+ */
+ return apply_filters( 'shortcut_link', $link );
+}
+
+/**
+ * Retrieve the URL for the current site where the front end is accessible.
+ *
+ * Returns the 'home' option with the appropriate protocol, 'https' if
+ * {@see is_ssl()} and 'http' otherwise. If `$scheme` is 'http' or 'https',
+ * `is_ssl()` is overridden.
+ *
+ * @since 3.0.0
+ *
+ * @param string $path Optional. Path relative to the home url. Default empty.
+ * @param string|null $scheme Optional. Scheme to give the home url context. Accepts
+ * 'http', 'https', 'relative', 'rest', or null. Default null.
+ * @return string Home url link with optional path appended.
+ */
+function home_url( $path = '', $scheme = null ) {
+ return get_home_url( null, $path, $scheme );
+}
+
+/**
+ * Retrieve the URL for a given site where the front end is accessible.
+ *
+ * Returns the 'home' option with the appropriate protocol, 'https' if
+ * {@see is_ssl()} and 'http' otherwise. If `$scheme` is 'http' or 'https',
+ * `is_ssl()` is
+ * overridden.
+ *
+ * @since 3.0.0
+ *
+ * @global string $pagenow
+ *
+ * @param int $blog_id Optional. Site ID. Default null (current site).
+ * @param string $path Optional. Path relative to the home URL. Default empty.
+ * @param string|null $scheme Optional. Scheme to give the home URL context. Accepts
+ * 'http', 'https', 'relative', 'rest', or null. Default null.
+ * @return string Home URL link with optional path appended.
+ */
+function get_home_url( $blog_id = null, $path = '', $scheme = null ) {
+ global $pagenow;
+
+ $orig_scheme = $scheme;
+
+ if ( empty( $blog_id ) || !is_multisite() ) {
+ $url = get_option( 'home' );
+ } else {
+ switch_to_blog( $blog_id );
+ $url = get_option( 'home' );
+ restore_current_blog();
+ }
+
+ if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
+ if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow )
+ $scheme = 'https';
+ else
+ $scheme = parse_url( $url, PHP_URL_SCHEME );
+ }
+
+ $url = set_url_scheme( $url, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim( $path, '/' );
+
+ /**
+ * Filter the home URL.
+ *
+ * @since 3.0.0
+ *
+ * @param string $url The complete home URL including scheme and path.
+ * @param string $path Path relative to the home URL. Blank string if no path is specified.
+ * @param string|null $orig_scheme Scheme to give the home URL context. Accepts 'http', 'https',
+ * 'relative', 'rest', or null.
+ * @param int|null $blog_id Site ID, or null for the current site.
+ */
+ return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id );
+}
+
+/**
+ * Retrieve the URL for the current site where WordPress application files
+ * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
+ *
+ * Returns the 'site_url' option with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @since 3.0.0
+ *
+ * @param string $path Optional. Path relative to the site url.
+ * @param string $scheme Optional. Scheme to give the site url context. See set_url_scheme().
+ * @return string Site url link with optional path appended.
+ */
+function site_url( $path = '', $scheme = null ) {
+ return get_site_url( null, $path, $scheme );
+}
+
+/**
+ * Retrieve the URL for a given site where WordPress application files
+ * (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
+ *
+ * Returns the 'site_url' option with the appropriate protocol, 'https' if
+ * {@see is_ssl()} and 'http' otherwise. If `$scheme` is 'http' or 'https',
+ * `is_ssl()` is overridden.
+ *
+ * @since 3.0.0
+ *
+ * @param int $blog_id Optional. Site ID. Default null (current site).
+ * @param string $path Optional. Path relative to the site url. Default empty.
+ * @param string $scheme Optional. Scheme to give the site url context. Accepts
+ * 'http', 'https', 'login', 'login_post', 'admin', or
+ * 'relative'. Default null.
+ * @return string Site url link with optional path appended.
+ */
+function get_site_url( $blog_id = null, $path = '', $scheme = null ) {
+ if ( empty( $blog_id ) || !is_multisite() ) {
+ $url = get_option( 'siteurl' );
+ } else {
+ switch_to_blog( $blog_id );
+ $url = get_option( 'siteurl' );
+ restore_current_blog();
+ }
+
+ $url = set_url_scheme( $url, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim( $path, '/' );
+
+ /**
+ * Filter the site URL.
+ *
+ * @since 2.7.0
+ *
+ * @param string $url The complete site URL including scheme and path.
+ * @param string $path Path relative to the site URL. Blank string if no path is specified.
+ * @param string|null $scheme Scheme to give the site URL context. Accepts 'http', 'https', 'login',
+ * 'login_post', 'admin', 'relative' or null.
+ * @param int|null $blog_id Site ID, or null for the current site.
+ */
+ return apply_filters( 'site_url', $url, $path, $scheme, $blog_id );
+}
+
+/**
+ * Retrieve the url to the admin area for the current site.
+ *
+ * @since 2.6.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+ */
+function admin_url( $path = '', $scheme = 'admin' ) {
+ return get_admin_url( null, $path, $scheme );
+}
+
+/**
+ * Retrieves the url to the admin area for a given site.
+ *
+ * @since 3.0.0
+ *
+ * @param int $blog_id Optional. Site ID. Default null (current site).
+ * @param string $path Optional. Path relative to the admin url. Default empty.
+ * @param string $scheme Optional. The scheme to use. Accepts 'http' or 'https',
+ * to force those schemes. Default 'admin', which obeys
+ * {@see force_ssl_admin()} and {@see is_ssl()}.
+ * @return string Admin url link with optional path appended.
+ */
+function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) {
+ $url = get_site_url($blog_id, 'wp-admin/', $scheme);
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim( $path, '/' );
+
+ /**
+ * Filter the admin area URL.
+ *
+ * @since 2.8.0
+ *
+ * @param string $url The complete admin area URL including scheme and path.
+ * @param string $path Path relative to the admin area URL. Blank string if no path is specified.
+ * @param int|null $blog_id Site ID, or null for the current site.
+ */
+ return apply_filters( 'admin_url', $url, $path, $blog_id );
+}
+
+/**
+ * Retrieve the url to the includes directory.
+ *
+ * @since 2.6.0
+ *
+ * @param string $path Optional. Path relative to the includes url.
+ * @param string $scheme Optional. Scheme to give the includes url context.
+ * @return string Includes url link with optional path appended.
+ */
+function includes_url( $path = '', $scheme = null ) {
+ $url = site_url( '/' . WPINC . '/', $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim($path, '/');
+
+ /**
+ * Filter the URL to the includes directory.
+ *
+ * @since 2.8.0
+ *
+ * @param string $url The complete URL to the includes directory including scheme and path.
+ * @param string $path Path relative to the URL to the wp-includes directory. Blank string
+ * if no path is specified.
+ */
+ return apply_filters( 'includes_url', $url, $path );
+}
+
+/**
+ * Retrieve the url to the content directory.
+ *
+ * @since 2.6.0
+ *
+ * @param string $path Optional. Path relative to the content url.
+ * @return string Content url link with optional path appended.
+ */
+function content_url($path = '') {
+ $url = set_url_scheme( WP_CONTENT_URL );
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim($path, '/');
+
+ /**
+ * Filter the URL to the content directory.
+ *
+ * @since 2.8.0
+ *
+ * @param string $url The complete URL to the content directory including scheme and path.
+ * @param string $path Path relative to the URL to the content directory. Blank string
+ * if no path is specified.
+ */
+ return apply_filters( 'content_url', $url, $path);
+}
+
+/**
+ * Retrieve a URL within the plugins or mu-plugins directory.
+ *
+ * Defaults to the plugins directory URL if no arguments are supplied.
+ *
+ * @since 2.6.0
+ *
+ * @param string $path Optional. Extra path appended to the end of the URL, including
+ * the relative directory if $plugin is supplied. Default empty.
+ * @param string $plugin Optional. A full path to a file inside a plugin or mu-plugin.
+ * The URL will be relative to its directory. Default empty.
+ * Typically this is done by passing `__FILE__` as the argument.
+ * @return string Plugins URL link with optional paths appended.
+ */
+function plugins_url( $path = '', $plugin = '' ) {
+
+ $path = wp_normalize_path( $path );
+ $plugin = wp_normalize_path( $plugin );
+ $mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR );
+
+ if ( !empty($plugin) && 0 === strpos($plugin, $mu_plugin_dir) )
+ $url = WPMU_PLUGIN_URL;
+ else
+ $url = WP_PLUGIN_URL;
+
+
+ $url = set_url_scheme( $url );
+
+ if ( !empty($plugin) && is_string($plugin) ) {
+ $folder = dirname(plugin_basename($plugin));
+ if ( '.' != $folder )
+ $url .= '/' . ltrim($folder, '/');
+ }
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim($path, '/');
+
+ /**
+ * Filter the URL to the plugins directory.
+ *
+ * @since 2.8.0
+ *
+ * @param string $url The complete URL to the plugins directory including scheme and path.
+ * @param string $path Path relative to the URL to the plugins directory. Blank string
+ * if no path is specified.
+ * @param string $plugin The plugin file path to be relative to. Blank string if no plugin
+ * is specified.
+ */
+ return apply_filters( 'plugins_url', $url, $path, $plugin );
+}
+
+/**
+ * Retrieve the site url for the current network.
+ *
+ * Returns the site url with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @since 3.0.0
+ *
+ * @param string $path Optional. Path relative to the site url.
+ * @param string $scheme Optional. Scheme to give the site url context. See set_url_scheme().
+ * @return string Site url link with optional path appended.
+ */
+function network_site_url( $path = '', $scheme = null ) {
+ if ( ! is_multisite() )
+ return site_url($path, $scheme);
+
+ $current_site = get_current_site();
+
+ if ( 'relative' == $scheme )
+ $url = $current_site->path;
+ else
+ $url = set_url_scheme( 'http://' . $current_site->domain . $current_site->path, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim( $path, '/' );
+
+ /**
+ * Filter the network site URL.
+ *
+ * @since 3.0.0
+ *
+ * @param string $url The complete network site URL including scheme and path.
+ * @param string $path Path relative to the network site URL. Blank string if
+ * no path is specified.
+ * @param string|null $scheme Scheme to give the URL context. Accepts 'http', 'https',
+ * 'relative' or null.
+ */
+ return apply_filters( 'network_site_url', $url, $path, $scheme );
+}
+
+/**
+ * Retrieves the home url for the current network.
+ *
+ * Returns the home url with the appropriate protocol, 'https' {@see is_ssl()}
+ * and 'http' otherwise. If `$scheme` is 'http' or 'https', `is_ssl()` is
+ * overridden.
+ *
+ * @since 3.0.0
+ *
+ * @param string $path Optional. Path relative to the home url. Default empty.
+ * @param string $scheme Optional. Scheme to give the home url context. Accepts
+ * 'http', 'https', or 'relative'. Default null.
+ * @return string Home url link with optional path appended.
+ */
+function network_home_url( $path = '', $scheme = null ) {
+ if ( ! is_multisite() )
+ return home_url($path, $scheme);
+
+ $current_site = get_current_site();
+ $orig_scheme = $scheme;
+
+ if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) )
+ $scheme = is_ssl() && ! is_admin() ? 'https' : 'http';
+
+ if ( 'relative' == $scheme )
+ $url = $current_site->path;
+ else
+ $url = set_url_scheme( 'http://' . $current_site->domain . $current_site->path, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim( $path, '/' );
+
+ /**
+ * Filter the network home URL.
+ *
+ * @since 3.0.0
+ *
+ * @param string $url The complete network home URL including scheme and path.
+ * @param string $path Path relative to the network home URL. Blank string
+ * if no path is specified.
+ * @param string|null $orig_scheme Scheme to give the URL context. Accepts 'http', 'https',
+ * 'relative' or null.
+ */
+ return apply_filters( 'network_home_url', $url, $path, $orig_scheme);
+}
+
+/**
+ * Retrieve the url to the admin area for the network.
+ *
+ * @since 3.0.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+ */
+function network_admin_url( $path = '', $scheme = 'admin' ) {
+ if ( ! is_multisite() )
+ return admin_url( $path, $scheme );
+
+ $url = network_site_url('wp-admin/network/', $scheme);
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim($path, '/');
+
+ /**
+ * Filter the network admin URL.
+ *
+ * @since 3.0.0
+ *
+ * @param string $url The complete network admin URL including scheme and path.
+ * @param string $path Path relative to the network admin URL. Blank string if
+ * no path is specified.
+ */
+ return apply_filters( 'network_admin_url', $url, $path );
+}
+
+/**
+ * Retrieve the url to the admin area for the current user.
+ *
+ * @since 3.0.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+ */
+function user_admin_url( $path = '', $scheme = 'admin' ) {
+ $url = network_site_url('wp-admin/user/', $scheme);
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim($path, '/');
+
+ /**
+ * Filter the user admin URL for the current user.
+ *
+ * @since 3.1.0
+ *
+ * @param string $url The complete URL including scheme and path.
+ * @param string $path Path relative to the URL. Blank string if
+ * no path is specified.
+ */
+ return apply_filters( 'user_admin_url', $url, $path );
+}
+
+/**
+ * Retrieve the url to the admin area for either the current site or the network depending on context.
+ *
+ * @since 3.1.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+ */
+function self_admin_url($path = '', $scheme = 'admin') {
+ if ( is_network_admin() )
+ return network_admin_url($path, $scheme);
+ elseif ( is_user_admin() )
+ return user_admin_url($path, $scheme);
+ else
+ return admin_url($path, $scheme);
+}
+
+/**
+ * Sets the scheme for a URL.
+ *
+ * @since 3.4.0
+ * @since 4.4.0 The 'rest' scheme was added.
+ *
+ * @param string $url Absolute url that includes a scheme
+ * @param string|null $scheme Optional. Scheme to give $url. Currently 'http', 'https', 'login',
+ * 'login_post', 'admin', 'relative', 'rest', 'rpc', or null. Default null.
+ * @return string $url URL with chosen scheme.
+ */
+function set_url_scheme( $url, $scheme = null ) {
+ $orig_scheme = $scheme;
+
+ if ( ! $scheme ) {
+ $scheme = is_ssl() ? 'https' : 'http';
+ } elseif ( $scheme === 'admin' || $scheme === 'login' || $scheme === 'login_post' || $scheme === 'rpc' ) {
+ $scheme = is_ssl() || force_ssl_admin() ? 'https' : 'http';
+ } elseif ( $scheme !== 'http' && $scheme !== 'https' && $scheme !== 'relative' ) {
+ $scheme = is_ssl() ? 'https' : 'http';
+ }
+
+ $url = trim( $url );
+ if ( substr( $url, 0, 2 ) === '//' )
+ $url = 'http:' . $url;
+
+ if ( 'relative' == $scheme ) {
+ $url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) );
+ if ( $url !== '' && $url[0] === '/' )
+ $url = '/' . ltrim($url , "/ \t\n\r\0\x0B" );
+ } else {
+ $url = preg_replace( '#^\w+://#', $scheme . '://', $url );
+ }
+
+ /**
+ * Filter the resulting URL after setting the scheme.
+ *
+ * @since 3.4.0
+ *
+ * @param string $url The complete URL including scheme and path.
+ * @param string $scheme Scheme applied to the URL. One of 'http', 'https', or 'relative'.
+ * @param string|null $orig_scheme Scheme requested for the URL. One of 'http', 'https', 'login',
+ * 'login_post', 'admin', 'relative', 'rest', 'rpc', or null.
+ */
+ return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme );
+}
+
+/**
+ * Get the URL to the user's dashboard.
+ *
+ * If a user does not belong to any site, the global user dashboard is used. If the user belongs to the current site,
+ * the dashboard for the current site is returned. If the user cannot edit the current site, the dashboard to the user's
+ * primary site is returned.
+ *
+ * @since 3.1.0
+ *
+ * @param int $user_id Optional. User ID. Defaults to current user.
+ * @param string $path Optional path relative to the dashboard. Use only paths known to both site and user admins.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Dashboard url link with optional path appended.
+ */
+function get_dashboard_url( $user_id = 0, $path = '', $scheme = 'admin' ) {
+ $user_id = $user_id ? (int) $user_id : get_current_user_id();
+
+ $blogs = get_blogs_of_user( $user_id );
+ if ( ! is_super_admin() && empty($blogs) ) {
+ $url = user_admin_url( $path, $scheme );
+ } elseif ( ! is_multisite() ) {
+ $url = admin_url( $path, $scheme );
+ } else {
+ $current_blog = get_current_blog_id();
+ if ( $current_blog && ( is_super_admin( $user_id ) || in_array( $current_blog, array_keys( $blogs ) ) ) ) {
+ $url = admin_url( $path, $scheme );
+ } else {
+ $active = get_active_blog_for_user( $user_id );
+ if ( $active )
+ $url = get_admin_url( $active->blog_id, $path, $scheme );
+ else
+ $url = user_admin_url( $path, $scheme );
+ }
+ }
+
+ /**
+ * Filter the dashboard URL for a user.
+ *
+ * @since 3.1.0
+ *
+ * @param string $url The complete URL including scheme and path.
+ * @param int $user_id The user ID.
+ * @param string $path Path relative to the URL. Blank string if no path is specified.
+ * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login',
+ * 'login_post', 'admin', 'relative' or null.
+ */
+ return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme);
+}
+
+/**
+ * Get the URL to the user's profile editor.
+ *
+ * @since 3.1.0
+ *
+ * @param int $user_id Optional. User ID. Defaults to current user.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl().
+ * 'http' or 'https' can be passed to force those schemes.
+ * @return string Dashboard url link with optional path appended.
+ */
+function get_edit_profile_url( $user_id = 0, $scheme = 'admin' ) {
+ $user_id = $user_id ? (int) $user_id : get_current_user_id();
+
+ if ( is_user_admin() )
+ $url = user_admin_url( 'profile.php', $scheme );
+ elseif ( is_network_admin() )
+ $url = network_admin_url( 'profile.php', $scheme );
+ else
+ $url = get_dashboard_url( $user_id, 'profile.php', $scheme );
+
+ /**
+ * Filter the URL for a user's profile editor.
+ *
+ * @since 3.1.0
+ *
+ * @param string $url The complete URL including scheme and path.
+ * @param int $user_id The user ID.
+ * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login',
+ * 'login_post', 'admin', 'relative' or null.
+ */
+ return apply_filters( 'edit_profile_url', $url, $user_id, $scheme);
+}
+
+/**
+ * Output rel=canonical for singular queries.
+ *
+ * @since 2.9.0
+ */
+function rel_canonical() {
+ if ( ! is_singular() ) {
+ return;
+ }
+
+ if ( ! $id = get_queried_object_id() ) {
+ return;
+ }
+
+ $url = get_permalink( $id );
+
+ $page = get_query_var( 'page' );
+ if ( $page >= 2 ) {
+ if ( '' == get_option( 'permalink_structure' ) ) {
+ $url = add_query_arg( 'page', $page, $url );
+ } else {
+ $url = trailingslashit( $url ) . user_trailingslashit( $page, 'single_paged' );
+ }
+ }
+
+ $cpage = get_query_var( 'cpage' );
+ if ( $cpage ) {
+ $url = get_comments_pagenum_link( $cpage );
+ }
+ echo '<link rel="canonical" href="' . esc_url( $url ) . "\" />\n";
+}
+
+/**
+ * Return a shortlink for a post, page, attachment, or a site.
+ *
+ * This function exists to provide a shortlink tag that all themes and plugins can target. A plugin must hook in to
+ * provide the actual shortlinks. Default shortlink support is limited to providing ?p= style links for posts.
+ * Plugins can short-circuit this function via the pre_get_shortlink filter or filter the output
+ * via the get_shortlink filter.
+ *
+ * @since 3.0.0.
+ *
+ * @param int $id A post or site id. Default is 0, which means the current post or site.
+ * @param string $context Whether the id is a 'site' id, 'post' id, or 'media' id.
+ * If 'post', the post_type of the post is consulted.
+ * If 'query', the current query is consulted to determine the id and context.
+ * Default is 'post'.
+ * @param bool $allow_slugs Whether to allow post slugs in the shortlink. It is up to the plugin how and whether to honor this.
+ * @return string A shortlink or an empty string if no shortlink exists for the requested resource or if shortlinks are not enabled.
+ */
+function wp_get_shortlink($id = 0, $context = 'post', $allow_slugs = true) {
+ /**
+ * Filter whether to preempt generating a shortlink for the given post.
+ *
+ * Passing a truthy value to the filter will effectively short-circuit the
+ * shortlink-generation process, returning that value instead.
+ *
+ * @since 3.0.0
+ *
+ * @param bool|string $return Short-circuit return value. Either false or a URL string.
+ * @param int $id Post ID, or 0 for the current post.
+ * @param string $context The context for the link. One of 'post' or 'query',
+ * @param bool $allow_slugs Whether to allow post slugs in the shortlink.
+ */
+ $shortlink = apply_filters( 'pre_get_shortlink', false, $id, $context, $allow_slugs );
+
+ if ( false !== $shortlink ) {
+ return $shortlink;
+ }
+
+ $post_id = 0;
+ if ( 'query' == $context && is_singular() ) {
+ $post_id = get_queried_object_id();
+ $post = get_post( $post_id );
+ } elseif ( 'post' == $context ) {
+ $post = get_post( $id );
+ if ( ! empty( $post->ID ) )
+ $post_id = $post->ID;
+ }
+
+ $shortlink = '';
+
+ // Return p= link for all public post types.
+ if ( ! empty( $post_id ) ) {
+ $post_type = get_post_type_object( $post->post_type );
+
+ if ( 'page' === $post->post_type && $post->ID == get_option( 'page_on_front' ) && 'page' == get_option( 'show_on_front' ) ) {
+ $shortlink = home_url( '/' );
+ } elseif ( $post_type->public ) {
+ $shortlink = home_url( '?p=' . $post_id );
}
}
+
+ /**
+ * Filter the shortlink for a post.
+ *
+ * @since 3.0.0
+ *
+ * @param string $shortlink Shortlink URL.
+ * @param int $id Post ID, or 0 for the current post.
+ * @param string $context The context for the link. One of 'post' or 'query',
+ * @param bool $allow_slugs Whether to allow post slugs in the shortlink. Not used by default.
+ */
+ return apply_filters( 'get_shortlink', $shortlink, $id, $context, $allow_slugs );
+}
+
+/**
+ * Inject rel=shortlink into head if a shortlink is defined for the current page.
+ *
+ * Attached to the wp_head action.
+ *
+ * @since 3.0.0
+ */
+function wp_shortlink_wp_head() {
+ $shortlink = wp_get_shortlink( 0, 'query' );
+
+ if ( empty( $shortlink ) )
+ return;
+
+ echo "<link rel='shortlink' href='" . esc_url( $shortlink ) . "' />\n";
+}
+
+/**
+ * Send a Link: rel=shortlink header if a shortlink is defined for the current page.
+ *
+ * Attached to the wp action.
+ *
+ * @since 3.0.0
+ */
+function wp_shortlink_header() {
+ if ( headers_sent() )
+ return;
+
+ $shortlink = wp_get_shortlink(0, 'query');
+
+ if ( empty($shortlink) )
+ return;
+
+ header('Link: <' . $shortlink . '>; rel=shortlink', false);
+}
+
+/**
+ * Display the Short Link for a Post
+ *
+ * Must be called from inside "The Loop"
+ *
+ * Call like the_shortlink(__('Shortlinkage FTW'))
+ *
+ * @since 3.0.0
+ *
+ * @param string $text Optional The link text or HTML to be displayed. Defaults to 'This is the short link.'
+ * @param string $title Optional The tooltip for the link. Must be sanitized. Defaults to the sanitized post title.
+ * @param string $before Optional HTML to display before the link.
+ * @param string $after Optional HTML to display after the link.
+ */
+function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) {
+ $post = get_post();
+
+ if ( empty( $text ) )
+ $text = __('This is the short link.');
+
+ if ( empty( $title ) )
+ $title = the_title_attribute( array( 'echo' => false ) );
+
+ $shortlink = wp_get_shortlink( $post->ID );
+
+ if ( !empty( $shortlink ) ) {
+ $link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '" title="' . $title . '">' . $text . '</a>';
+
+ /**
+ * Filter the shortlink anchor tag for a post.
+ *
+ * @since 3.0.0
+ *
+ * @param string $link Shortlink anchor tag.
+ * @param string $shortlink Shortlink URL.
+ * @param string $text Shortlink's text.
+ * @param string $title Shortlink's title attribute.
+ */
+ $link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title );
+ echo $before, $link, $after;
+ }
+}
+
+
+/**
+ * Retrieve the avatar URL.
+ *
+ * @since 4.2.0
+ *
+ * @param mixed $id_or_email The Gravatar to retrieve a URL for. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ * @param array $args {
+ * Optional. Arguments to return instead of the default arguments.
+ *
+ * @type int $size Height and width of the avatar in pixels. Default 96.
+ * @type string $default URL for the default image or a default type. Accepts '404' (return
+ * a 404 instead of a default image), 'retro' (8bit), 'monsterid' (monster),
+ * 'wavatar' (cartoon face), 'indenticon' (the "quilt"), 'mystery', 'mm',
+ * or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF), or
+ * 'gravatar_default' (the Gravatar logo). Default is the value of the
+ * 'avatar_default' option, with a fallback of 'mystery'.
+ * @type bool $force_default Whether to always show the default image, never the Gravatar. Default false.
+ * @type string $rating What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are
+ * judged in that order. Default is the value of the 'avatar_rating' option.
+ * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values.
+ * Default null.
+ * @type array $processed_args When the function returns, the value will be the processed/sanitized $args
+ * plus a "found_avatar" guess. Pass as a reference. Default null.
+ * }
+ * @return false|string The URL of the avatar we found, or false if we couldn't find an avatar.
+ */
+function get_avatar_url( $id_or_email, $args = null ) {
+ $args = get_avatar_data( $id_or_email, $args );
+ return $args['url'];
}
-?>
+/**
+ * Retrieve default data about the avatar.
+ *
+ * @since 4.2.0
+ *
+ * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ * @param array $args {
+ * Optional. Arguments to return instead of the default arguments.
+ *
+ * @type int $size Height and width of the avatar image file in pixels. Default 96.
+ * @type int $height Display height of the avatar in pixels. Defaults to $size.
+ * @type int $width Display width of the avatar in pixels. Defaults to $size.
+ * @type string $default URL for the default image or a default type. Accepts '404' (return
+ * a 404 instead of a default image), 'retro' (8bit), 'monsterid' (monster),
+ * 'wavatar' (cartoon face), 'indenticon' (the "quilt"), 'mystery', 'mm',
+ * or 'mysteryman' (The Oyster Man), 'blank' (transparent GIF), or
+ * 'gravatar_default' (the Gravatar logo). Default is the value of the
+ * 'avatar_default' option, with a fallback of 'mystery'.
+ * @type bool $force_default Whether to always show the default image, never the Gravatar. Default false.
+ * @type string $rating What rating to display avatars up to. Accepts 'G', 'PG', 'R', 'X', and are
+ * judged in that order. Default is the value of the 'avatar_rating' option.
+ * @type string $scheme URL scheme to use. See set_url_scheme() for accepted values.
+ * Default null.
+ * @type array $processed_args When the function returns, the value will be the processed/sanitized $args
+ * plus a "found_avatar" guess. Pass as a reference. Default null.
+ * @type string $extra_attr HTML attributes to insert in the IMG element. Is not sanitized. Default empty.
+ * }
+ * @return array $processed_args {
+ * Along with the arguments passed in `$args`, this will contain a couple of extra arguments.
+ *
+ * @type bool $found_avatar True if we were able to find an avatar for this user,
+ * false or not set if we couldn't.
+ * @type string $url The URL of the avatar we found.
+ * }
+ */
+function get_avatar_data( $id_or_email, $args = null ) {
+ $args = wp_parse_args( $args, array(
+ 'size' => 96,
+ 'height' => null,
+ 'width' => null,
+ 'default' => get_option( 'avatar_default', 'mystery' ),
+ 'force_default' => false,
+ 'rating' => get_option( 'avatar_rating' ),
+ 'scheme' => null,
+ 'processed_args' => null, // if used, should be a reference
+ 'extra_attr' => '',
+ ) );
+
+ if ( is_numeric( $args['size'] ) ) {
+ $args['size'] = absint( $args['size'] );
+ if ( ! $args['size'] ) {
+ $args['size'] = 96;
+ }
+ } else {
+ $args['size'] = 96;
+ }
+
+ if ( is_numeric( $args['height'] ) ) {
+ $args['height'] = absint( $args['height'] );
+ if ( ! $args['height'] ) {
+ $args['height'] = $args['size'];
+ }
+ } else {
+ $args['height'] = $args['size'];
+ }
+
+ if ( is_numeric( $args['width'] ) ) {
+ $args['width'] = absint( $args['width'] );
+ if ( ! $args['width'] ) {
+ $args['width'] = $args['size'];
+ }
+ } else {
+ $args['width'] = $args['size'];
+ }
+
+ if ( empty( $args['default'] ) ) {
+ $args['default'] = get_option( 'avatar_default', 'mystery' );
+ }
+
+ switch ( $args['default'] ) {
+ case 'mm' :
+ case 'mystery' :
+ case 'mysteryman' :
+ $args['default'] = 'mm';
+ break;
+ case 'gravatar_default' :
+ $args['default'] = false;
+ break;
+ }
+
+ $args['force_default'] = (bool) $args['force_default'];
+
+ $args['rating'] = strtolower( $args['rating'] );
+
+ $args['found_avatar'] = false;
+
+ /**
+ * Filter whether to retrieve the avatar URL early.
+ *
+ * Passing a non-null value in the 'url' member of the return array will
+ * effectively short circuit get_avatar_data(), passing the value through
+ * the {@see 'get_avatar_data'} filter and returning early.
+ *
+ * @since 4.2.0
+ *
+ * @param array $args Arguments passed to get_avatar_data(), after processing.
+ * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ */
+ $args = apply_filters( 'pre_get_avatar_data', $args, $id_or_email );
+
+ if ( isset( $args['url'] ) && ! is_null( $args['url'] ) ) {
+ /** This filter is documented in wp-includes/link-template.php */
+ return apply_filters( 'get_avatar_data', $args, $id_or_email );
+ }
+
+ $email_hash = '';
+ $user = $email = false;
+
+ if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) {
+ $id_or_email = get_comment( $id_or_email );
+ }
+
+ // Process the user identifier.
+ if ( is_numeric( $id_or_email ) ) {
+ $user = get_user_by( 'id', absint( $id_or_email ) );
+ } elseif ( is_string( $id_or_email ) ) {
+ if ( strpos( $id_or_email, '@md5.gravatar.com' ) ) {
+ // md5 hash
+ list( $email_hash ) = explode( '@', $id_or_email );
+ } else {
+ // email address
+ $email = $id_or_email;
+ }
+ } elseif ( $id_or_email instanceof WP_User ) {
+ // User Object
+ $user = $id_or_email;
+ } elseif ( $id_or_email instanceof WP_Post ) {
+ // Post Object
+ $user = get_user_by( 'id', (int) $id_or_email->post_author );
+ } elseif ( $id_or_email instanceof WP_Comment ) {
+ /**
+ * Filter the list of allowed comment types for retrieving avatars.
+ *
+ * @since 3.0.0
+ *
+ * @param array $types An array of content types. Default only contains 'comment'.
+ */
+ $allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) );
+ if ( ! empty( $id_or_email->comment_type ) && ! in_array( $id_or_email->comment_type, (array) $allowed_comment_types ) ) {
+ $args['url'] = false;
+ /** This filter is documented in wp-includes/link-template.php */
+ return apply_filters( 'get_avatar_data', $args, $id_or_email );
+ }
+
+ if ( ! empty( $id_or_email->user_id ) ) {
+ $user = get_user_by( 'id', (int) $id_or_email->user_id );
+ }
+ if ( ( ! $user || is_wp_error( $user ) ) && ! empty( $id_or_email->comment_author_email ) ) {
+ $email = $id_or_email->comment_author_email;
+ }
+ }
+
+ if ( ! $email_hash ) {
+ if ( $user ) {
+ $email = $user->user_email;
+ }
+
+ if ( $email ) {
+ $email_hash = md5( strtolower( trim( $email ) ) );
+ }
+ }
+
+ if ( $email_hash ) {
+ $args['found_avatar'] = true;
+ $gravatar_server = hexdec( $email_hash[0] ) % 3;
+ } else {
+ $gravatar_server = rand( 0, 2 );
+ }
+
+ $url_args = array(
+ 's' => $args['size'],
+ 'd' => $args['default'],
+ 'f' => $args['force_default'] ? 'y' : false,
+ 'r' => $args['rating'],
+ );
+
+ if ( is_ssl() ) {
+ $url = 'https://secure.gravatar.com/avatar/' . $email_hash;
+ } else {
+ $url = sprintf( 'http://%d.gravatar.com/avatar/%s', $gravatar_server, $email_hash );
+ }
+
+ $url = add_query_arg(
+ rawurlencode_deep( array_filter( $url_args ) ),
+ set_url_scheme( $url, $args['scheme'] )
+ );
+
+ /**
+ * Filter the avatar URL.
+ *
+ * @since 4.2.0
+ *
+ * @param string $url The URL of the avatar.
+ * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ * @param array $args Arguments passed to get_avatar_data(), after processing.
+ */
+ $args['url'] = apply_filters( 'get_avatar_url', $url, $id_or_email, $args );
+
+ /**
+ * Filter the avatar data.
+ *
+ * @since 4.2.0
+ *
+ * @param array $args Arguments passed to get_avatar_data(), after processing.
+ * @param mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash,
+ * user email, WP_User object, WP_Post object, or WP_Comment object.
+ */
+ return apply_filters( 'get_avatar_data', $args, $id_or_email );
+}
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