+ $return = get_previous_posts_link($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);
+}
+
+/**
+ * Retrieve comments page number link.
+ *
+ * @since 2.7.0
+ *
+ * @param int $pagenum Optional. Page number.
+ * @return string
+ */
+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) . 'comment-page-' . $pagenum, 'commentpaged');
+ else
+ $result = add_query_arg( 'cpage', $pagenum, $result );
+ }
+ } elseif ( $pagenum > 1 ) {
+ if ( $wp_rewrite->using_permalinks() )
+ $result = user_trailingslashit( trailingslashit($result) . 'comment-page-' . $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.
+ */
+ $result = apply_filters( 'get_comments_pagenum_link', $result );
+
+ return $result;
+}
+
+/**
+ * Return the link to next comments page.
+ *
+ * @since 2.7.1
+ *
+ * @param string $label Optional. Label for link text.
+ * @param int $max_page Optional. Max page.
+ * @return string|null
+ */
+function get_next_comments_link( $label = '', $max_page = 0 ) {
+ global $wp_query;
+
+ if ( !is_singular() || !get_option('page_comments') )
+ return;
+
+ $page = get_query_var('cpage');
+
+ $nextpage = intval($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|null
+ */
+function get_previous_comments_link( $label = '' ) {
+ if ( !is_singular() || !get_option('page_comments') )
+ 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
+ *
+ * @param string|array $args Optional args. See paginate_links().
+ * @return string Markup for pagination links.
+*/
+function paginate_comments_links($args = array()) {
+ global $wp_rewrite;
+
+ if ( !is_singular() || !get_option('page_comments') )
+ 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()) . 'comment-page-%#%', 'commentpaged');
+
+ $args = wp_parse_args( $args, $defaults );
+ $page_links = paginate_links( $args );
+
+ if ( $args['echo'] )
+ echo $page_links;
+ else
+ return $page_links;
+}
+
+/**
+ * Retrieve the Press This bookmarklet link.
+ *
+ * Use this in 'a' element 'href' attribute.
+ *
+ * @since 2.6.0
+ *
+ * @return string
+ */
+function get_shortcut_link() {
+ // In case of breaking changes, version this. #WP20071
+ $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='" . admin_url('press-this.php') . "',
+ l=d.location,
+ e=encodeURIComponent,
+ u=f+'?u='+e(l.href)+'&t='+e(d.title)+'&s='+e(s)+'&v=4';
+ a=function(){if(!w.open(u,'t','toolbar=0,resizable=1,scrollbars=1,status=1,width=720,height=570'))l.href=u;};
+ if (/Firefox/.test(navigator.userAgent)) setTimeout(a, 0); else a();
+ void(0)";
+
+ $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 home url for the current site.
+ *
+ * Returns the 'home' 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
+ *
+ * @uses get_home_url()
+ *
+ * @param string $path (optional) Path relative to the home url.
+ * @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
+ * @return string Home url link with optional path appended.
+*/
+function home_url( $path = '', $scheme = null ) {
+ return get_home_url( null, $path, $scheme );
+}
+
+/**
+ * Retrieve the home url for a given site.
+ *
+ * Returns the 'home' 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 int $blog_id (optional) Blog ID. Defaults to current blog.
+ * @param string $path (optional) Path relative to the home url.
+ * @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
+ * @return string Home url link with optional path appended.
+*/
+function get_home_url( $blog_id = null, $path = '', $scheme = null ) {
+ $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' !== $GLOBALS['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' or null.
+ * @param int|null $blog_id Blog ID, or null for the current blog.
+ */
+ return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id );
+}
+
+/**
+ * Retrieve the site url for the current site.
+ *
+ * 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
+ *
+ * @uses get_site_url()
+ *
+ * @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 site url for a given site.
+ *
+ * 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 int $blog_id (optional) Blog ID. Defaults to current blog.
+ * @param string $path Optional. Path relative to the site url.
+ * @param string $scheme Optional. Scheme to give the site url context. Currently 'http', 'https', 'login', 'login_post', 'admin', or 'relative'.
+ * @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 Blog ID, or null for the current blog.
+ */
+ 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 );
+}
+
+/**
+ * Retrieve the url to the admin area for a given site.
+ *
+ * @since 3.0.0
+ *
+ * @param int $blog_id (optional) Blog ID. Defaults to current blog.
+ * @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 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 Blog ID, or null for the current blog.
+ */
+ 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 );
+}
+
+/**
+ * Retrieve the home url for the current network.
+ *
+ * Returns the home 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 home url.
+ * @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
+ * @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 blog 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);
+}
+
+/**
+ * Set the scheme for a URL
+ *
+ * @since 3.4.0
+ *
+ * @param string $url Absolute url that includes a scheme
+ * @param string $scheme Optional. Scheme to give $url. Currently 'http', 'https', 'login', 'login_post', 'admin', or 'relative'.
+ * @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 $orig_scheme Scheme requested for the URL. One of 'http', 'https', 'login',
+ * 'login_post', 'admin', 'rpc', or 'relative'.
+ */
+ 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 blog 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 blog 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;
+
+ global $wp_the_query;
+ if ( !$id = $wp_the_query->get_queried_object_id() )
+ return;
+
+ $link = get_permalink( $id );
+
+ if ( $page = get_query_var('cpage') )
+ $link = get_comments_pagenum_link( $page );
+
+ echo "<link rel='canonical' href='$link' />\n";
+}
+
+/**
+ * Return a shortlink for a post, page, attachment, or blog.
+ *
+ * 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 blog id. Default is 0, which means the current post or blog.
+ * @param string $context Whether the id is a 'blog' 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;
+
+ global $wp_query;
+ $post_id = 0;
+ if ( 'query' == $context && is_singular() ) {
+ $post_id = $wp_query->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 );