+ $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 ) ) );
+
+ /**
+ * Filters 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 );
+}
+
+/**
+ * Retrieves the 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;
+
+ /**
+ * Filters the comment edit link.
+ *
+ * @since 2.3.0
+ *
+ * @param string $location The edit link.
+ */
+ return apply_filters( 'get_edit_comment_link', $location );
+}
+
+/**
+ * Displays the edit comment link with formatting.
+ *
+ * @since 1.0.0
+ *
+ * @param string $text Optional. Anchor text. If null, default is 'Edit This'. Default null.
+ * @param string $before Optional. Display before edit link. Default empty.
+ * @param string $after Optional. Display after edit link. Default empty.
+ */
+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>';
+
+ /**
+ * Filters 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;
+}
+
+/**
+ * Displays the edit bookmark link.
+ *
+ * @since 2.7.0
+ *
+ * @param int|stdClass $link Optional. Bookmark ID. Default is the id of the current bookmark.
+ * @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;
+
+ /**
+ * Filters 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 );
+}
+
+/**
+ * Displays the edit bookmark link anchor content.
+ *
+ * @since 2.7.0
+ *
+ * @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 int $bookmark Optional. Bookmark ID. Default is the current bookmark.
+ */
+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>';
+
+ /**
+ * Filters 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;
+}
+
+/**
+ * Retrieves the 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' ) );
+
+ /**
+ * Filters 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
+
+/**
+ * Retrieves the previous post that is adjacent to the current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Retrieves the next post that is adjacent to the current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Retrieves the 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. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @param bool $previous Optional. Whether to retrieve previous post. Default true
+ * @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__, '3.3.0', 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( ',', $term_array ) . ")";
+ }
+
+ /**
+ * Filters the IDs of terms excluded from adjacent post queries.
+ *
+ * The dynamic portion of the hook name, `$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 = $previous ? 'DESC' : 'ASC';
+
+ /**
+ * Filters the JOIN clause in the SQL for an adjacent post query.
+ *
+ * The dynamic portion of the hook name, `$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, $post );
+
+ /**
+ * Filters the WHERE clause in the SQL for an adjacent post query.
+ *
+ * The dynamic portion of the hook name, `$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, $post );
+
+ /**
+ * Filters the ORDER BY clause in the SQL for an adjacent post query.
+ *
+ * The dynamic portion of the hook name, `$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;
+}
+
+/**
+ * Retrieves the adjacent post relational link.
+ *
+ * Can either be next or previous post relational link.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format. Default '%title'.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 = $previous ? 'previous' : 'next';
+
+ /**
+ * Filters the adjacent post relational link.
+ *
+ * The dynamic portion of the hook name, `$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 );
+}
+
+/**
+ * Displays the relational links for the posts adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format. Default '%title'.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Displays 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
+ *
+ * @see adjacent_posts_rel_link()
+ */
+function adjacent_posts_rel_link_wp_head() {
+ if ( ! is_single() || is_attachment() ) {
+ return;
+ }
+ adjacent_posts_rel_link();
+}
+
+/**
+ * Displays the relational link for the next post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @see get_adjacent_post_rel_link()
+ *
+ * @param string $title Optional. Link title format. Default '%title'.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Displays the relational link for the previous post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @see get_adjacent_post_rel_link()
+ *
+ * @param string $title Optional. Link title format. Default '%title'.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @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 );
+}
+
+/**
+ * Retrieves the 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.
+ * Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs.
+ * Default empty.
+ * @param bool $start Optional. Whether to retrieve first or last post. Default true
+ * @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 );
+}
+
+/**
+ * Retrieves the previous post link that is adjacent to the current post.
+ *
+ * @since 3.7.0
+ *
+ * @param string $format Optional. Link anchor format. Default '« %link'.
+ * @param string $link Optional. Link permalink format. Default '%title%'.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Displays the 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. Default '« %link'.
+ * @param string $link Optional. Link permalink format. Default '%title'.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Retrieves the next post link that is adjacent to the current post.
+ *
+ * @since 3.7.0
+ *
+ * @param string $format Optional. Link anchor format. Default '« %link'.
+ * @param string $link Optional. Link permalink format. Default '%title'.
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Displays the 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. Default '« %link'.
+ * @param string $link Optional. Link permalink format. Default '%title'
+ * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Retrieves the 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. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded terms IDs. Default empty.
+ * @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 = $previous ? 'previous' : 'next';
+
+ /**
+ * Filters the adjacent post link.
+ *
+ * The dynamic portion of the hook name, `$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 );
+}
+
+/**
+ * Displays the 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. Default false.
+ * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded category IDs. Default empty.
+ * @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 );
+}
+
+/**
+ * Retrieves the link for a page number.
+ *
+ * @since 1.5.0
+ *
+ * @global WP_Rewrite $wp_rewrite
+ *
+ * @param int $pagenum Optional. Page ID. Default 1.
+ * @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;
+ }
+
+ /**
+ * Filters 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 );
+}
+
+/**
+ * Retrieves the next posts page link.
+ *
+ * Backported from 2.1.3 to 2.0.10.
+ *
+ * @since 2.0.10
+ *
+ * @global int $paged
+ *
+ * @param int $max_page Optional. Max pages. Default 0.
+ * @return string|void The link URL for next posts page.
+ */
+function get_next_posts_page_link($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);
+ }
+}
+
+/**
+ * Displays or retrieves the next posts page link.
+ *
+ * @since 0.71
+ *
+ * @param int $max_page Optional. Max pages. Default 0.
+ * @param bool $echo Optional. Whether to echo the link. Default true.
+ * @return string|void The link URL for next posts page if `$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;
+}
+
+/**
+ * Retrieves 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. Default 0.
+ * @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 ) ) {
+ /**
+ * Filters 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>';
+ }
+}
+
+/**
+ * Displays the next posts page link.
+ *
+ * @since 0.71
+ *
+ * @param string $label Content for link text.
+ * @param int $max_page Optional. Max pages. Default 0.
+ */
+function next_posts_link( $label = null, $max_page = 0 ) {
+ echo get_next_posts_link( $label, $max_page );
+}
+
+/**
+ * Retrieves the 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);
+ }
+}
+
+/**
+ * Displays or retrieves the previous posts page link.
+ *
+ * @since 0.71
+ *
+ * @param bool $echo Optional. Whether to echo the link. Default true.
+ * @return string|void The previous posts page link if `$echo = false`.
+ */
+function previous_posts( $echo = true ) {
+ $output = esc_url( get_previous_posts_page_link() );
+
+ if ( $echo )
+ echo $output;
+ else
+ return $output;
+}
+
+/**
+ * Retrieves 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 ) {
+ /**
+ * Filters 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>';
+ }
+}
+
+/**
+ * Displays 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 );
+}
+
+/**
+ * Retrieves the post pages link navigation for previous and next pages.
+ *
+ * @since 2.8.0
+ *
+ * @global WP_Query $wp_query
+ *
+ * @param string|array $args {
+ * Optional. Arguments to build the post pages link navigation.
+ *
+ * @type string $sep Separator character. Default '—'.
+ * @type string $prelabel Link text to display for the previous page link.
+ * Default '« Previous Page'.
+ * @type string $nxtlabel Link text to display for the next page link.
+ * Default 'Next Page »'.
+ * }
+ * @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'] = '';
+ }