JezK
Edit File: post-template.php
<?php /** * WordPress Post Template Functions. * * Gets content for the current post in the loop. * * @package WordPress * @subpackage Template */ /** * Displays the ID of the current item in the WordPress Loop. * * @since 0.71 */ function the_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid echo get_the_ID(); } /** * Retrieves the ID of the current item in the WordPress Loop. * * @since 2.1.0 * * @return int|false The ID of the current item in the WordPress Loop. False if $post is not set. */ function get_the_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid $post = get_post(); return ! empty( $post ) ? $post->ID : false; } /** * Displays or retrieves the current post title with optional markup. * * @since 0.71 * * @param string $before Optional. Markup to prepend to the title. Default empty. * @param string $after Optional. Markup to append to the title. Default empty. * @param bool $display Optional. Whether to echo or return the title. Default true for echo. * @return void|string Void if `$display` argument is true or the title is empty, * current post title if `$display` is false. */ function the_title( $before = '', $after = '', $display = true ) { $title = get_the_title(); if ( strlen( $title ) === 0 ) { return; } $title = $before . $title . $after; if ( $display ) { echo $title; } else { return $title; } } /** * Sanitizes the current title when retrieving or displaying. * * Works like the_title(), except the parameters can be in a string or * an array. See the function for what can be override in the $args parameter. * * The title before it is displayed will have the tags stripped and esc_attr() * before it is passed to the user or displayed. The default as with the_title(), * is to display the title. * * @since 2.3.0 * * @param string|array $args { * Title attribute arguments. Optional. * * @type string $before Markup to prepend to the title. Default empty. * @type string $after Markup to append to the title. Default empty. * @type bool $echo Whether to echo or return the title. Default true for echo. * @type WP_Post $post Current post object to retrieve the title for. * } * @return void|string Void if 'echo' argument is true, the title attribute if 'echo' is false. */ function the_title_attribute( $args = '' ) { $defaults = array( 'before' => '', 'after' => '', 'echo' => true, 'post' => get_post(), ); $parsed_args = wp_parse_args( $args, $defaults ); $title = get_the_title( $parsed_args['post'] ); if ( strlen( $title ) === 0 ) { return; } $title = $parsed_args['before'] . $title . $parsed_args['after']; $title = esc_attr( strip_tags( $title ) ); if ( $parsed_args['echo'] ) { echo $title; } else { return $title; } } /** * Retrieves the post title. * * If the post is protected and the visitor is not an admin, then "Protected" * will be inserted before the post title. If the post is private, then * "Private" will be inserted before the post title. * * @since 0.71 * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @return string */ function get_the_title( $post = 0 ) { $post = get_post( $post ); $post_title = isset( $post->post_title ) ? $post->post_title : ''; $post_id = isset( $post->ID ) ? $post->ID : 0; if ( ! is_admin() ) { if ( ! empty( $post->post_password ) ) { /* translators: %s: Protected post title. */ $prepend = __( 'Protected: %s' ); /** * Filters the text prepended to the post title for protected posts. * * The filter is only applied on the front end. * * @since 2.8.0 * * @param string $prepend Text displayed before the post title. * Default 'Protected: %s'. * @param WP_Post $post Current post object. */ $protected_title_format = apply_filters( 'protected_title_format', $prepend, $post ); $post_title = sprintf( $protected_title_format, $post_title ); } elseif ( isset( $post->post_status ) && 'private' === $post->post_status ) { /* translators: %s: Private post title. */ $prepend = __( 'Private: %s' ); /** * Filters the text prepended to the post title of private posts. * * The filter is only applied on the front end. * * @since 2.8.0 * * @param string $prepend Text displayed before the post title. * Default 'Private: %s'. * @param WP_Post $post Current post object. */ $private_title_format = apply_filters( 'private_title_format', $prepend, $post ); $post_title = sprintf( $private_title_format, $post_title ); } } /** * Filters the post title. * * @since 0.71 * * @param string $post_title The post title. * @param int $post_id The post ID. */ return apply_filters( 'the_title', $post_title, $post_id ); } /** * Displays the Post Global Unique Identifier (guid). * * The guid will appear to be a link, but should not be used as a link to the * post. The reason you should not use it as a link, is because of moving the * blog across domains. * * URL is escaped to make it XML-safe. * * @since 1.5.0 * * @param int|WP_Post $post Optional. Post ID or post object. Default is global $post. */ function the_guid( $post = 0 ) { $post = get_post( $post ); $post_guid = isset( $post->guid ) ? get_the_guid( $post ) : ''; $post_id = isset( $post->ID ) ? $post->ID : 0; /** * Filters the escaped Global Unique Identifier (guid) of the post. * * @since 4.2.0 * * @see get_the_guid() * * @param string $post_guid Escaped Global Unique Identifier (guid) of the post. * @param int $post_id The post ID. */ echo apply_filters( 'the_guid', $post_guid, $post_id ); } /** * Retrieves the Post Global Unique Identifier (guid). * * The guid will appear to be a link, but should not be used as an link to the * post. The reason you should not use it as a link, is because of moving the * blog across domains. * * @since 1.5.0 * * @param int|WP_Post $post Optional. Post ID or post object. Default is global $post. * @return string */ function get_the_guid( $post = 0 ) { $post = get_post( $post ); $post_guid = isset( $post->guid ) ? $post->guid : ''; $post_id = isset( $post->ID ) ? $post->ID : 0; /** * Filters the Global Unique Identifier (guid) of the post. * * @since 1.5.0 * * @param string $post_guid Global Unique Identifier (guid) of the post. * @param int $post_id The post ID. */ return apply_filters( 'get_the_guid', $post_guid, $post_id ); } /** * Displays the post content. * * @since 0.71 * * @param string $more_link_text Optional. Content for when there is more text. * @param bool $strip_teaser Optional. Strip teaser content before the more text. Default false. */ function the_content( $more_link_text = null, $strip_teaser = false ) { $content = get_the_content( $more_link_text, $strip_teaser ); /** * Filters the post content. * * @since 0.71 * * @param string $content Content of the current post. */ $content = apply_filters( 'the_content', $content ); $content = str_replace( ']]>', ']]>', $content ); echo $content; } /** * Retrieves the post content. * * @since 0.71 * @since 5.2.0 Added the `$post` parameter. * * @global int $page Page number of a single post/page. * @global int $more Boolean indicator for whether single post/page is being viewed. * @global bool $preview Whether post/page is in preview mode. * @global array $pages Array of all pages in post/page. Each array element contains * part of the content separated by the `<!--nextpage-->` tag. * @global int $multipage Boolean indicator for whether multiple pages are in play. * * @param string $more_link_text Optional. Content for when there is more text. * @param bool $strip_teaser Optional. Strip teaser content before the more text. Default false. * @param WP_Post|object|int $post Optional. WP_Post instance or Post ID/object. Default null. * @return string */ function get_the_content( $more_link_text = null, $strip_teaser = false, $post = null ) { global $page, $more, $preview, $pages, $multipage; $_post = get_post( $post ); if ( ! ( $_post instanceof WP_Post ) ) { return ''; } /* * Use the globals if the $post parameter was not specified, * but only after they have been set up in setup_postdata(). */ if ( null === $post && did_action( 'the_post' ) ) { $elements = compact( 'page', 'more', 'preview', 'pages', 'multipage' ); } else { $elements = generate_postdata( $_post ); } if ( null === $more_link_text ) { $more_link_text = sprintf( '<span aria-label="%1$s">%2$s</span>', sprintf( /* translators: %s: Post title. */ __( 'Continue reading %s' ), the_title_attribute( array( 'echo' => false, 'post' => $_post, ) ) ), __( '(more…)' ) ); } $output = ''; $has_teaser = false; // If post password required and it doesn't match the cookie. if ( post_password_required( $_post ) ) { return get_the_password_form( $_post ); } // If the requested page doesn't exist. if ( $elements['page'] > count( $elements['pages'] ) ) { // Give them the highest numbered page that DOES exist. $elements['page'] = count( $elements['pages'] ); } $page_no = $elements['page']; $content = $elements['pages'][ $page_no - 1 ]; if ( preg_match( '/<!--more(.*?)?-->/', $content, $matches ) ) { if ( has_block( 'more', $content ) ) { // Remove the core/more block delimiters. They will be left over after $content is split up. $content = preg_replace( '/<!-- \/?wp:more(.*?) -->/', '', $content ); } $content = explode( $matches[0], $content, 2 ); if ( ! empty( $matches[1] ) && ! empty( $more_link_text ) ) { $more_link_text = strip_tags( wp_kses_no_null( trim( $matches[1] ) ) ); } $has_teaser = true; } else { $content = array( $content ); } if ( str_contains( $_post->post_content, '<!--noteaser-->' ) && ( ! $elements['multipage'] || 1 === $elements['page'] ) ) { $strip_teaser = true; } $teaser = $content[0]; if ( $elements['more'] && $strip_teaser && $has_teaser ) { $teaser = ''; } $output .= $teaser; if ( count( $content ) > 1 ) { if ( $elements['more'] ) { $output .= '<span id="more-' . $_post->ID . '"></span>' . $content[1]; } else { if ( ! empty( $more_link_text ) ) { /** * Filters the Read More link text. * * @since 2.8.0 * * @param string $more_link_element Read More link element. * @param string $more_link_text Read More text. */ $output .= apply_filters( 'the_content_more_link', ' <a href="' . get_permalink( $_post ) . "#more-{$_post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text ); } $output = force_balance_tags( $output ); } } return $output; } /** * Displays the post excerpt. * * @since 0.71 */ function the_excerpt() { /** * Filters the displayed post excerpt. * * @since 0.71 * * @see get_the_excerpt() * * @param string $post_excerpt The post excerpt. */ echo apply_filters( 'the_excerpt', get_the_excerpt() ); } /** * Retrieves the post excerpt. * * @since 0.71 * @since 4.5.0 Introduced the `$post` parameter. * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @return string Post excerpt. */ function get_the_excerpt( $post = null ) { if ( is_bool( $post ) ) { _deprecated_argument( __FUNCTION__, '2.3.0' ); } $post = get_post( $post ); if ( empty( $post ) ) { return ''; } if ( post_password_required( $post ) ) { return __( 'There is no excerpt because this is a protected post.' ); } /** * Filters the retrieved post excerpt. * * @since 1.2.0 * @since 4.5.0 Introduced the `$post` parameter. * * @param string $post_excerpt The post excerpt. * @param WP_Post $post Post object. */ return apply_filters( 'get_the_excerpt', $post->post_excerpt, $post ); } /** * Determines whether the post has a custom excerpt. * * For more information on this and similar theme functions, check out * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ * Conditional Tags} article in the Theme Developer Handbook. * * @since 2.3.0 * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @return bool True if the post has a custom excerpt, false otherwise. */ function has_excerpt( $post = 0 ) { $post = get_post( $post ); return ( ! empty( $post->post_excerpt ) ); } /** * Displays the classes for the post container element. * * @since 2.7.0 * * @param string|string[] $css_class Optional. One or more classes to add to the class list. * Default empty. * @param int|WP_Post $post Optional. Post ID or post object. Defaults to the global `$post`. */ function post_class( $css_class = '', $post = null ) { // Separates classes with a single space, collates classes for post DIV. echo 'class="' . esc_attr( implode( ' ', get_post_class( $css_class, $post ) ) ) . '"'; } /** * Retrieves an array of the class names for the post container element. * * The class names are many: * * - If the post has a post thumbnail, `has-post-thumbnail` is added as a class. * - If the post is sticky, then the `sticky` class name is added. * - The class `hentry` is always added to each post. * - For each taxonomy that the post belongs to, a class will be added of the format * `{$taxonomy}-{$slug}`, e.g. `category-foo` or `my_custom_taxonomy-bar`. * The `post_tag` taxonomy is a special case; the class has the `tag-` prefix * instead of `post_tag-`. * * All class names are passed through the filter, {@see 'post_class'}, followed by * `$css_class` parameter value, with the post ID as the last parameter. * * @since 2.7.0 * @since 4.2.0 Custom taxonomy class names were added. * * @param string|string[] $css_class Optional. Space-separated string or array of class names * to add to the class list. Default empty. * @param int|WP_Post $post Optional. Post ID or post object. * @return string[] Array of class names. */ function get_post_class( $css_class = '', $post = null ) { $post = get_post( $post ); $classes = array(); if ( $css_class ) { if ( ! is_array( $css_class ) ) { $css_class = preg_split( '#\s+#', $css_class ); } $classes = array_map( 'esc_attr', $css_class ); } else { // Ensure that we always coerce class to being an array. $css_class = array(); } if ( ! $post ) { return $classes; } $classes[] = 'post-' . $post->ID; if ( ! is_admin() ) { $classes[] = $post->post_type; } $classes[] = 'type-' . $post->post_type; $classes[] = 'status-' . $post->post_status; // Post Format. if ( post_type_supports( $post->post_type, 'post-formats' ) ) { $post_format = get_post_format( $post->ID ); if ( $post_format && ! is_wp_error( $post_format ) ) { $classes[] = 'format-' . sanitize_html_class( $post_format ); } else { $classes[] = 'format-standard'; } } $post_password_required = post_password_required( $post->ID ); // Post requires password. if ( $post_password_required ) { $classes[] = 'post-password-required'; } elseif ( ! empty( $post->post_password ) ) { $classes[] = 'post-password-protected'; } // Post thumbnails. if ( current_theme_supports( 'post-thumbnails' ) && has_post_thumbnail( $post->ID ) && ! is_attachment( $post ) && ! $post_password_required ) { $classes[] = 'has-post-thumbnail'; } // Sticky for Sticky Posts. if ( is_sticky( $post->ID ) ) { if ( is_home() && ! is_paged() ) { $classes[] = 'sticky'; } elseif ( is_admin() ) { $classes[] = 'status-sticky'; } } // hentry for hAtom compliance. $classes[] = 'hentry'; // All public taxonomies. $taxonomies = get_taxonomies( array( 'public' => true ) ); /** * Filters the taxonomies to generate classes for each individual term. * * Default is all public taxonomies registered to the post type. * * @since 6.1.0 * * @param string[] $taxonomies List of all taxonomy names to generate classes for. * @param int $post_id The post ID. * @param string[] $classes An array of post class names. * @param string[] $css_class An array of additional class names added to the post. */ $taxonomies = apply_filters( 'post_class_taxonomies', $taxonomies, $post->ID, $classes, $css_class ); foreach ( (array) $taxonomies as $taxonomy ) { if ( is_object_in_taxonomy( $post->post_type, $taxonomy ) ) { foreach ( (array) get_the_terms( $post->ID, $taxonomy ) as $term ) { if ( empty( $term->slug ) ) { continue; } $term_class = sanitize_html_class( $term->slug, $term->term_id ); if ( is_numeric( $term_class ) || ! trim( $term_class, '-' ) ) { $term_class = $term->term_id; } // 'post_tag' uses the 'tag' prefix for backward compatibility. if ( 'post_tag' === $taxonomy ) { $classes[] = 'tag-' . $term_class; } else { $classes[] = sanitize_html_class( $taxonomy . '-' . $term_class, $taxonomy . '-' . $term->term_id ); } } } } $classes = array_map( 'esc_attr', $classes ); /** * Filters the list of CSS class names for the current post. * * @since 2.7.0 * * @param string[] $classes An array of post class names. * @param string[] $css_class An array of additional class names added to the post. * @param int $post_id The post ID. */ $classes = apply_filters( 'post_class', $classes, $css_class, $post->ID ); return array_unique( $classes ); } /** * Displays the class names for the body element. * * @since 2.8.0 * * @param string|string[] $css_class Optional. Space-separated string or array of class names * to add to the class list. Default empty. */ function body_class( $css_class = '' ) { // Separates class names with a single space, collates class names for body element. echo 'class="' . esc_attr( implode( ' ', get_body_class( $css_class ) ) ) . '"'; } /** * Retrieves an array of the class names for the body element. * * @since 2.8.0 * * @global WP_Query $wp_query WordPress Query object. * * @param string|string[] $css_class Optional. Space-separated string or array of class names * to add to the class list. Default empty. * @return string[] Array of class names. */ function get_body_class( $css_class = '' ) { global $wp_query; $classes = array(); if ( is_rtl() ) { $classes[] = 'rtl'; } if ( is_front_page() ) { $classes[] = 'home'; } if ( is_home() ) { $classes[] = 'blog'; } if ( is_privacy_policy() ) { $classes[] = 'privacy-policy'; } if ( is_archive() ) { $classes[] = 'archive'; } if ( is_date() ) { $classes[] = 'date'; } if ( is_search() ) { $classes[] = 'search'; $classes[] = $wp_query->posts ? 'search-results' : 'search-no-results'; } if ( is_paged() ) { $classes[] = 'paged'; } if ( is_attachment() ) { $classes[] = 'attachment'; } if ( is_404() ) { $classes[] = 'error404'; } if ( is_singular() ) { $post = $wp_query->get_queried_object(); $post_id = $post->ID; $post_type = $post->post_type; $classes[] = 'wp-singular'; if ( is_page_template() ) { $classes[] = "{$post_type}-template"; $template_slug = get_page_template_slug( $post_id ); $template_parts = explode( '/', $template_slug ); foreach ( $template_parts as $part ) { $classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( array( '.', '/' ), '-', basename( $part, '.php' ) ) ); } $classes[] = "{$post_type}-template-" . sanitize_html_class( str_replace( '.', '-', $template_slug ) ); } else { $classes[] = "{$post_type}-template-default"; } if ( is_single() ) { $classes[] = 'single'; if ( isset( $post->post_type ) ) { $classes[] = 'single-' . sanitize_html_class( $post->post_type, $post_id ); $classes[] = 'postid-' . $post_id; // Post Format. if ( post_type_supports( $post->post_type, 'post-formats' ) ) { $post_format = get_post_format( $post->ID ); if ( $post_format && ! is_wp_error( $post_format ) ) { $classes[] = 'single-format-' . sanitize_html_class( $post_format ); } else { $classes[] = 'single-format-standard'; } } } } if ( is_attachment() ) { $mime_type = get_post_mime_type( $post_id ); $mime_prefix = array( 'application/', 'image/', 'text/', 'audio/', 'video/', 'music/' ); $classes[] = 'attachmentid-' . $post_id; $classes[] = 'attachment-' . str_replace( $mime_prefix, '', $mime_type ); } elseif ( is_page() ) { $classes[] = 'page'; $classes[] = 'page-id-' . $post_id; if ( get_pages( array( 'parent' => $post_id, 'number' => 1, ) ) ) { $classes[] = 'page-parent'; } if ( $post->post_parent ) { $classes[] = 'page-child'; $classes[] = 'parent-pageid-' . $post->post_parent; } } } elseif ( is_archive() ) { if ( is_post_type_archive() ) { $classes[] = 'post-type-archive'; $post_type = get_query_var( 'post_type' ); if ( is_array( $post_type ) ) { $post_type = reset( $post_type ); } $classes[] = 'post-type-archive-' . sanitize_html_class( $post_type ); } elseif ( is_author() ) { $author = $wp_query->get_queried_object(); $classes[] = 'author'; if ( isset( $author->user_nicename ) ) { $classes[] = 'author-' . sanitize_html_class( $author->user_nicename, $author->ID ); $classes[] = 'author-' . $author->ID; } } elseif ( is_category() ) { $cat = $wp_query->get_queried_object(); $classes[] = 'category'; if ( isset( $cat->term_id ) ) { $cat_class = sanitize_html_class( $cat->slug, $cat->term_id ); if ( is_numeric( $cat_class ) || ! trim( $cat_class, '-' ) ) { $cat_class = $cat->term_id; } $classes[] = 'category-' . $cat_class; $classes[] = 'category-' . $cat->term_id; } } elseif ( is_tag() ) { $tag = $wp_query->get_queried_object(); $classes[] = 'tag'; if ( isset( $tag->term_id ) ) { $tag_class = sanitize_html_class( $tag->slug, $tag->term_id ); if ( is_numeric( $tag_class ) || ! trim( $tag_class, '-' ) ) { $tag_class = $tag->term_id; } $classes[] = 'tag-' . $tag_class; $classes[] = 'tag-' . $tag->term_id; } } elseif ( is_tax() ) { $term = $wp_query->get_queried_object(); if ( isset( $term->term_id ) ) { $term_class = sanitize_html_class( $term->slug, $term->term_id ); if ( is_numeric( $term_class ) || ! trim( $term_class, '-' ) ) { $term_class = $term->term_id; } $classes[] = 'tax-' . sanitize_html_class( $term->taxonomy ); $classes[] = 'term-' . $term_class; $classes[] = 'term-' . $term->term_id; } } } if ( is_user_logged_in() ) { $classes[] = 'logged-in'; } if ( is_admin_bar_showing() ) { $classes[] = 'admin-bar'; $classes[] = 'no-customize-support'; } if ( current_theme_supports( 'custom-background' ) && ( get_background_color() !== get_theme_support( 'custom-background', 'default-color' ) || get_background_image() ) ) { $classes[] = 'custom-background'; } if ( has_custom_logo() ) { $classes[] = 'wp-custom-logo'; } if ( current_theme_supports( 'responsive-embeds' ) ) { $classes[] = 'wp-embed-responsive'; } $page = $wp_query->get( 'page' ); if ( ! $page || $page < 2 ) { $page = $wp_query->get( 'paged' ); } if ( $page && $page > 1 && ! is_404() ) { $classes[] = 'paged-' . $page; if ( is_single() ) { $classes[] = 'single-paged-' . $page; } elseif ( is_page() ) { $classes[] = 'page-paged-' . $page; } elseif ( is_category() ) { $classes[] = 'category-paged-' . $page; } elseif ( is_tag() ) { $classes[] = 'tag-paged-' . $page; } elseif ( is_date() ) { $classes[] = 'date-paged-' . $page; } elseif ( is_author() ) { $classes[] = 'author-paged-' . $page; } elseif ( is_search() ) { $classes[] = 'search-paged-' . $page; } elseif ( is_post_type_archive() ) { $classes[] = 'post-type-paged-' . $page; } } $classes[] = 'wp-theme-' . sanitize_html_class( get_template() ); if ( is_child_theme() ) { $classes[] = 'wp-child-theme-' . sanitize_html_class( get_stylesheet() ); } if ( ! empty( $css_class ) ) { if ( ! is_array( $css_class ) ) { $css_class = preg_split( '#\s+#', $css_class ); } $classes = array_merge( $classes, $css_class ); } else { // Ensure that we always coerce class to being an array. $css_class = array(); } $classes = array_map( 'esc_attr', $classes ); /** * Filters the list of CSS body class names for the current post or page. * * @since 2.8.0 * * @param string[] $classes An array of body class names. * @param string[] $css_class An array of additional class names added to the body. */ $classes = apply_filters( 'body_class', $classes, $css_class ); return array_unique( $classes ); } /** * Determines whether the post requires password and whether a correct password has been provided. * * @since 2.7.0 * * @param int|WP_Post|null $post An optional post. Global $post used if not provided. * @return bool false if a password is not required or the correct password cookie is present, true otherwise. */ function post_password_required( $post = null ) { $post = get_post( $post ); if ( empty( $post->post_password ) ) { /** This filter is documented in wp-includes/post-template.php */ return apply_filters( 'post_password_required', false, $post ); } if ( ! isset( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] ) ) { /** This filter is documented in wp-includes/post-template.php */ return apply_filters( 'post_password_required', true, $post ); } require_once ABSPATH . WPINC . '/class-phpass.php'; $hasher = new PasswordHash( 8, true ); $hash = wp_unslash( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] ); if ( ! str_starts_with( $hash, '$P$B' ) ) { $required = true; } else { $required = ! $hasher->CheckPassword( $post->post_password, $hash ); } /** * Filters whether a post requires the user to supply a password. * * @since 4.7.0 * * @param bool $required Whether the user needs to supply a password. True if password has not been * provided or is incorrect, false if password has been supplied or is not required. * @param WP_Post $post Post object. */ return apply_filters( 'post_password_required', $required, $post ); } // // Page Template Functions for usage in Themes. // /** * The formatted output of a list of pages. * * Displays page links for paginated posts (i.e. including the `<!--nextpage-->` * Quicktag one or more times). This tag must be within The Loop. * * @since 1.2.0 * @since 5.1.0 Added the `aria_current` argument. * * @global int $page * @global int $numpages * @global int $multipage * @global int $more * * @param string|array $args { * Optional. Array or string of default arguments. * * @type string $before HTML or text to prepend to each link. Default is `<p> Pages:`. * @type string $after HTML or text to append to each link. Default is `</p>`. * @type string $link_before HTML or text to prepend to each link, inside the `<a>` tag. * Also prepended to the current item, which is not linked. Default empty. * @type string $link_after HTML or text to append to each Pages link inside the `<a>` tag. * Also appended to the current item, which is not linked. Default empty. * @type string $aria_current The value for the aria-current attribute. Possible values are 'page', * 'step', 'location', 'date', 'time', 'true', 'false'. Default is 'page'. * @type string $next_or_number Indicates whether page numbers should be used. Valid values are number * and next. Default is 'number'. * @type string $separator Text between pagination links. Default is ' '. * @type string $nextpagelink Link text for the next page link, if available. Default is 'Next Page'. * @type string $previouspagelink Link text for the previous page link, if available. Default is 'Previous Page'. * @type string $pagelink Format string for page numbers. The % in the parameter string will be * replaced with the page number, so 'Page %' generates "Page 1", "Page 2", etc. * Defaults to '%', just the page number. * @type int|bool $echo Whether to echo or not. Accepts 1|true or 0|false. Default 1|true. * } * @return string Formatted output in HTML. */ function wp_link_pages( $args = '' ) { global $page, $numpages, $multipage, $more; $defaults = array( 'before' => '<p class="post-nav-links">' . __( 'Pages:' ), 'after' => '</p>', 'link_before' => '', 'link_after' => '', 'aria_current' => 'page', 'next_or_number' => 'number', 'separator' => ' ', 'nextpagelink' => __( 'Next page' ), 'previouspagelink' => __( 'Previous page' ), 'pagelink' => '%', 'echo' => 1, ); $parsed_args = wp_parse_args( $args, $defaults ); /** * Filters the arguments used in retrieving page links for paginated posts. * * @since 3.0.0 * * @param array $parsed_args An array of page link arguments. See wp_link_pages() * for information on accepted arguments. */ $parsed_args = apply_filters( 'wp_link_pages_args', $parsed_args ); $output = ''; if ( $multipage ) { if ( 'number' === $parsed_args['next_or_number'] ) { $output .= $parsed_args['before']; for ( $i = 1; $i <= $numpages; $i++ ) { $link = $parsed_args['link_before'] . str_replace( '%', $i, $parsed_args['pagelink'] ) . $parsed_args['link_after']; if ( $i !== $page || ! $more && 1 === $page ) { $link = _wp_link_page( $i ) . $link . '</a>'; } elseif ( $i === $page ) { $link = '<span class="post-page-numbers current" aria-current="' . esc_attr( $parsed_args['aria_current'] ) . '">' . $link . '</span>'; } /** * Filters the HTML output of individual page number links. * * @since 3.6.0 * * @param string $link The page number HTML output. * @param int $i Page number for paginated posts' page links. */ $link = apply_filters( 'wp_link_pages_link', $link, $i ); // Use the custom links separator beginning with the second link. $output .= ( 1 === $i ) ? ' ' : $parsed_args['separator']; $output .= $link; } $output .= $parsed_args['after']; } elseif ( $more ) { $output .= $parsed_args['before']; $prev = $page - 1; if ( $prev > 0 ) { $link = _wp_link_page( $prev ) . $parsed_args['link_before'] . $parsed_args['previouspagelink'] . $parsed_args['link_after'] . '</a>'; /** This filter is documented in wp-includes/post-template.php */ $output .= apply_filters( 'wp_link_pages_link', $link, $prev ); } $next = $page + 1; if ( $next <= $numpages ) { if ( $prev ) { $output .= $parsed_args['separator']; } $link = _wp_link_page( $next ) . $parsed_args['link_before'] . $parsed_args['nextpagelink'] . $parsed_args['link_after'] . '</a>'; /** This filter is documented in wp-includes/post-template.php */ $output .= apply_filters( 'wp_link_pages_link', $link, $next ); } $output .= $parsed_args['after']; } } /** * Filters the HTML output of page links for paginated posts. * * @since 3.6.0 * * @param string $output HTML output of paginated posts' page links. * @param array|string $args An array or query string of arguments. See wp_link_pages() * for information on accepted arguments. */ $html = apply_filters( 'wp_link_pages', $output, $args ); if ( $parsed_args['echo'] ) { echo $html; } return $html; } /** * Helper function for wp_link_pages(). * * @since 3.1.0 * @access private * * @global WP_Rewrite $wp_rewrite WordPress rewrite component. * * @param int $i Page number. * @return string Link. */ function _wp_link_page( $i ) { global $wp_rewrite; $post = get_post(); $query_args = array(); if ( 1 === $i ) { $url = get_permalink(); } else { if ( ! get_option( 'permalink_structure' ) || in_array( $post->post_status, array( 'draft', 'pending' ), true ) ) { $url = add_query_arg( 'page', $i, get_permalink() ); } elseif ( 'page' === get_option( 'show_on_front' ) && (int) get_option( 'page_on_front' ) === $post->ID ) { $url = trailingslashit( get_permalink() ) . user_trailingslashit( "$wp_rewrite->pagination_base/" . $i, 'single_paged' ); } else { $url = trailingslashit( get_permalink() ) . user_trailingslashit( $i, 'single_paged' ); } } if ( is_preview() ) { if ( ( 'draft' !== $post->post_status ) && isset( $_GET['preview_id'], $_GET['preview_nonce'] ) ) { $query_args['preview_id'] = wp_unslash( $_GET['preview_id'] ); $query_args['preview_nonce'] = wp_unslash( $_GET['preview_nonce'] ); } $url = get_preview_post_link( $post, $query_args, $url ); } return '<a href="' . esc_url( $url ) . '" class="post-page-numbers">'; } // // Post-meta: Custom per-post fields. // /** * Retrieves post custom meta data field. * * @since 1.5.0 * * @param string $key Meta data key name. * @return array|string|false Array of values, or single value if only one element exists. * False if the key does not exist. */ function post_custom( $key = '' ) { $custom = get_post_custom(); if ( ! isset( $custom[ $key ] ) ) { return false; } elseif ( 1 === count( $custom[ $key ] ) ) { return $custom[ $key ][0]; } else { return $custom[ $key ]; } } /** * Displays a list of post custom fields. * * @since 1.2.0 * * @deprecated 6.0.2 Use get_post_meta() to retrieve post meta and render manually. */ function the_meta() { _deprecated_function( __FUNCTION__, '6.0.2', 'get_post_meta()' ); $keys = get_post_custom_keys(); if ( $keys ) { $li_html = ''; foreach ( (array) $keys as $key ) { $keyt = trim( $key ); if ( is_protected_meta( $keyt, 'post' ) ) { continue; } $values = array_map( 'trim', get_post_custom_values( $key ) ); $value = implode( ', ', $values ); $html = sprintf( "<li><span class='post-meta-key'>%s</span> %s</li>\n", /* translators: %s: Post custom field name. */ esc_html( sprintf( _x( '%s:', 'Post custom field name' ), $key ) ), esc_html( $value ) ); /** * Filters the HTML output of the li element in the post custom fields list. * * @since 2.2.0 * * @param string $html The HTML output for the li element. * @param string $key Meta key. * @param string $value Meta value. */ $li_html .= apply_filters( 'the_meta_key', $html, $key, $value ); } if ( $li_html ) { echo "<ul class='post-meta'>\n{$li_html}</ul>\n"; } } } // // Pages. // /** * Retrieves or displays a list of pages as a dropdown (select list). * * @since 2.1.0 * @since 4.2.0 The `$value_field` argument was added. * @since 4.3.0 The `$class` argument was added. * * @see get_pages() * * @param array|string $args { * Optional. Array or string of arguments to generate a page dropdown. See get_pages() for additional arguments. * * @type int $depth Maximum depth. Default 0. * @type int $child_of Page ID to retrieve child pages of. Default 0. * @type int|string $selected Value of the option that should be selected. Default 0. * @type bool|int $echo Whether to echo or return the generated markup. Accepts 0, 1, * or their bool equivalents. Default 1. * @type string $name Value for the 'name' attribute of the select element. * Default 'page_id'. * @type string $id Value for the 'id' attribute of the select element. * @type string $class Value for the 'class' attribute of the select element. Default: none. * Defaults to the value of `$name`. * @type string $show_option_none Text to display for showing no pages. Default empty (does not display). * @type string $show_option_no_change Text to display for "no change" option. Default empty (does not display). * @type string $option_none_value Value to use when no page is selected. Default empty. * @type string $value_field Post field used to populate the 'value' attribute of the option * elements. Accepts any valid post field. Default 'ID'. * } * @return string HTML dropdown list of pages. */ function wp_dropdown_pages( $args = '' ) { $defaults = array( 'depth' => 0, 'child_of' => 0, 'selected' => 0, 'echo' => 1, 'name' => 'page_id', 'id' => '', 'class' => '', 'show_option_none' => '', 'show_option_no_change' => '', 'option_none_value' => '', 'value_field' => 'ID', ); $parsed_args = wp_parse_args( $args, $defaults ); $pages = get_pages( $parsed_args ); $output = ''; // Back-compat with old system where both id and name were based on $name argument. if ( empty( $parsed_args['id'] ) ) { $parsed_args['id'] = $parsed_args['name']; } if ( ! empty( $pages ) ) { $class = ''; if ( ! empty( $parsed_args['class'] ) ) { $class = " class='" . esc_attr( $parsed_args['class'] ) . "'"; } $output = "<select name='" . esc_attr( $parsed_args['name'] ) . "'" . $class . " id='" . esc_attr( $parsed_args['id'] ) . "'>\n"; if ( $parsed_args['show_option_no_change'] ) { $output .= "\t<option value=\"-1\">" . $parsed_args['show_option_no_change'] . "</option>\n"; } if ( $parsed_args['show_option_none'] ) { $output .= "\t<option value=\"" . esc_attr( $parsed_args['option_none_value'] ) . '">' . $parsed_args['show_option_none'] . "</option>\n"; } $output .= walk_page_dropdown_tree( $pages, $parsed_args['depth'], $parsed_args ); $output .= "</select>\n"; } /** * Filters the HTML output of a list of pages as a dropdown. * * @since 2.1.0 * @since 4.4.0 `$parsed_args` and `$pages` added as arguments. * * @param string $output HTML output for dropdown list of pages. * @param array $parsed_args The parsed arguments array. See wp_dropdown_pages() * for information on accepted arguments. * @param WP_Post[] $pages Array of the page objects. */ $html = apply_filters( 'wp_dropdown_pages', $output, $parsed_args, $pages ); if ( $parsed_args['echo'] ) { echo $html; } return $html; } /** * Retrieves or displays a list of pages (or hierarchical post type items) in list (li) format. * * @since 1.5.0 * @since 4.7.0 Added the `item_spacing` argument. * * @see get_pages() * * @global WP_Query $wp_query WordPress Query object. * * @param array|string $args { * Optional. Array or string of arguments to generate a list of pages. See get_pages() for additional arguments. * * @type int $child_of Display only the sub-pages of a single page by ID. Default 0 (all pages). * @type string $authors Comma-separated list of author IDs. Default empty (all authors). * @type string $date_format PHP date format to use for the listed pages. Relies on the 'show_date' parameter. * Default is the value of 'date_format' option. * @type int $depth Number of levels in the hierarchy of pages to include in the generated list. * Accepts -1 (any depth), 0 (all pages), 1 (top-level pages only), and n (pages to * the given n depth). Default 0. * @type bool $echo Whether or not to echo the list of pages. Default true. * @type string $exclude Comma-separated list of page IDs to exclude. Default empty. * @type array $include Comma-separated list of page IDs to include. Default empty. * @type string $link_after Text or HTML to follow the page link label. Default null. * @type string $link_before Text or HTML to precede the page link label. Default null. * @type string $post_type Post type to query for. Default 'page'. * @type string|array $post_status Comma-separated list or array of post statuses to include. Default 'publish'. * @type string $show_date Whether to display the page publish or modified date for each page. Accepts * 'modified' or any other value. An empty value hides the date. Default empty. * @type string $sort_column Comma-separated list of column names to sort the pages by. Accepts 'post_author', * 'post_date', 'post_title', 'post_name', 'post_modified', 'post_modified_gmt', * 'menu_order', 'post_parent', 'ID', 'rand', or 'comment_count'. Default 'post_title'. * @type string $title_li List heading. Passing a null or empty value will result in no heading, and the list * will not be wrapped with unordered list `<ul>` tags. Default 'Pages'. * @type string $item_spacing Whether to preserve whitespace within the menu's HTML. Accepts 'preserve' or 'discard'. * Default 'preserve'. * @type Walker $walker Walker instance to use for listing pages. Default empty which results in a * Walker_Page instance being used. * } * @return void|string Void if 'echo' argument is true, HTML list of pages if 'echo' is false. */ function wp_list_pages( $args = '' ) { $defaults = array( 'depth' => 0, 'show_date' => '', 'date_format' => get_option( 'date_format' ), 'child_of' => 0, 'exclude' => '', 'title_li' => __( 'Pages' ), 'echo' => 1, 'authors' => '', 'sort_column' => 'menu_order, post_title', 'link_before' => '', 'link_after' => '', 'item_spacing' => 'preserve', 'walker' => '', ); $parsed_args = wp_parse_args( $args, $defaults ); if ( ! in_array( $parsed_args['item_spacing'], array( 'preserve', 'discard' ), true ) ) { // Invalid value, fall back to default. $parsed_args['item_spacing'] = $defaults['item_spacing']; } $output = ''; $current_page = 0; // Sanitize, mostly to keep spaces out. $parsed_args['exclude'] = preg_replace( '/[^0-9,]/', '', $parsed_args['exclude'] ); // Allow plugins to filter an array of excluded pages (but don't put a nullstring into the array). $exclude_array = ( $parsed_args['exclude'] ) ? explode( ',', $parsed_args['exclude'] ) : array(); /** * Filters the array of pages to exclude from the pages list. * * @since 2.1.0 * * @param string[] $exclude_array An array of page IDs to exclude. */ $parsed_args['exclude'] = implode( ',', apply_filters( 'wp_list_pages_excludes', $exclude_array ) ); $parsed_args['hierarchical'] = 0; // Query pages. $pages = get_pages( $parsed_args ); if ( ! empty( $pages ) ) { if ( $parsed_args['title_li'] ) { $output .= '<li class="pagenav">' . $parsed_args['title_li'] . '<ul>'; } global $wp_query; if ( is_page() || is_attachment() || $wp_query->is_posts_page ) { $current_page = get_queried_object_id(); } elseif ( is_singular() ) { $queried_object = get_queried_object(); if ( is_post_type_hierarchical( $queried_object->post_type ) ) { $current_page = $queried_object->ID; } } $output .= walk_page_tree( $pages, $parsed_args['depth'], $current_page, $parsed_args ); if ( $parsed_args['title_li'] ) { $output .= '</ul></li>'; } } /** * Filters the HTML output of the pages to list. * * @since 1.5.1 * @since 4.4.0 `$pages` added as arguments. * * @see wp_list_pages() * * @param string $output HTML output of the pages list. * @param array $parsed_args An array of page-listing arguments. See wp_list_pages() * for information on accepted arguments. * @param WP_Post[] $pages Array of the page objects. */ $html = apply_filters( 'wp_list_pages', $output, $parsed_args, $pages ); if ( $parsed_args['echo'] ) { echo $html; } else { return $html; } } /** * Displays or retrieves a list of pages with an optional home link. * * The arguments are listed below and part of the arguments are for wp_list_pages() function. * Check that function for more info on those arguments. * * @since 2.7.0 * @since 4.4.0 Added `menu_id`, `container`, `before`, `after`, and `walker` arguments. * @since 4.7.0 Added the `item_spacing` argument. * * @param array|string $args { * Optional. Array or string of arguments to generate a page menu. See wp_list_pages() for additional arguments. * * @type string $sort_column How to sort the list of pages. Accepts post column names. * Default 'menu_order, post_title'. * @type string $menu_id ID for the div containing the page list. Default is empty string. * @type string $menu_class Class to use for the element containing the page list. Default 'menu'. * @type string $container Element to use for the element containing the page list. Default 'div'. * @type bool $echo Whether to echo the list or return it. Accepts true (echo) or false (return). * Default true. * @type int|bool|string $show_home Whether to display the link to the home page. Can just enter the text * you'd like shown for the home link. 1|true defaults to 'Home'. * @type string $link_before The HTML or text to prepend to $show_home text. Default empty. * @type string $link_after The HTML or text to append to $show_home text. Default empty. * @type string $before The HTML or text to prepend to the menu. Default is '<ul>'. * @type string $after The HTML or text to append to the menu. Default is '</ul>'. * @type string $item_spacing Whether to preserve whitespace within the menu's HTML. Accepts 'preserve' * or 'discard'. Default 'discard'. * @type Walker $walker Walker instance to use for listing pages. Default empty which results in a * Walker_Page instance being used. * } * @return void|string Void if 'echo' argument is true, HTML menu if 'echo' is false. */ function wp_page_menu( $args = array() ) { $defaults = array( 'sort_column' => 'menu_order, post_title', 'menu_id' => '', 'menu_class' => 'menu', 'container' => 'div', 'echo' => true, 'link_before' => '', 'link_after' => '', 'before' => '<ul>', 'after' => '</ul>', 'item_spacing' => 'discard', 'walker' => '', ); $args = wp_parse_args( $args, $defaults ); if ( ! in_array( $args['item_spacing'], array( 'preserve', 'discard' ), true ) ) { // Invalid value, fall back to default. $args['item_spacing'] = $defaults['item_spacing']; } if ( 'preserve' === $args['item_spacing'] ) { $t = "\t"; $n = "\n"; } else { $t = ''; $n = ''; } /** * Filters the arguments used to generate a page-based menu. * * @since 2.7.0 * * @see wp_page_menu() * * @param array $args An array of page menu arguments. See wp_page_menu() * for information on accepted arguments. */ $args = apply_filters( 'wp_page_menu_args', $args ); $menu = ''; $list_args = $args; // Show Home in the menu. if ( ! empty( $args['show_home'] ) ) { if ( true === $args['show_home'] || '1' === $args['show_home'] || 1 === $args['show_home'] ) { $text = __( 'Home' ); } else { $text = $args['show_home']; } $class = ''; if ( is_front_page() && ! is_paged() ) { $class = 'class="current_page_item"'; } $menu .= '<li ' . $class . '><a href="' . esc_url( home_url( '/' ) ) . '">' . $args['link_before'] . $text . $args['link_after'] . '</a></li>'; // If the front page is a page, add it to the exclude list. if ( 'page' === get_option( 'show_on_front' ) ) { if ( ! empty( $list_args['exclude'] ) ) { $list_args['exclude'] .= ','; } else { $list_args['exclude'] = ''; } $list_args['exclude'] .= get_option( 'page_on_front' ); } } $list_args['echo'] = false; $list_args['title_li'] = ''; $menu .= wp_list_pages( $list_args ); $container = sanitize_text_field( $args['container'] ); // Fallback in case `wp_nav_menu()` was called without a container. if ( empty( $container ) ) { $container = 'div'; } if ( $menu ) { // wp_nav_menu() doesn't set before and after. if ( isset( $args['fallback_cb'] ) && 'wp_page_menu' === $args['fallback_cb'] && 'ul' !== $container ) { $args['before'] = "<ul>{$n}"; $args['after'] = '</ul>'; } $menu = $args['before'] . $menu . $args['after']; } $attrs = ''; if ( ! empty( $args['menu_id'] ) ) { $attrs .= ' id="' . esc_attr( $args['menu_id'] ) . '"'; } if ( ! empty( $args['menu_class'] ) ) { $attrs .= ' class="' . esc_attr( $args['menu_class'] ) . '"'; } $menu = "<{$container}{$attrs}>" . $menu . "</{$container}>{$n}"; /** * Filters the HTML output of a page-based menu. * * @since 2.7.0 * * @see wp_page_menu() * * @param string $menu The HTML output. * @param array $args An array of arguments. See wp_page_menu() * for information on accepted arguments. */ $menu = apply_filters( 'wp_page_menu', $menu, $args ); if ( $args['echo'] ) { echo $menu; } else { return $menu; } } // // Page helpers. // /** * Retrieves HTML list content for page list. * * @uses Walker_Page to create HTML list content. * @since 2.1.0 * * @param array $pages * @param int $depth * @param int $current_page * @param array $args * @return string */ function walk_page_tree( $pages, $depth, $current_page, $args ) { if ( empty( $args['walker'] ) ) { $walker = new Walker_Page(); } else { /** * @var Walker $walker */ $walker = $args['walker']; } foreach ( (array) $pages as $page ) { if ( $page->post_parent ) { $args['pages_with_children'][ $page->post_parent ] = true; } } return $walker->walk( $pages, $depth, $args, $current_page ); } /** * Retrieves HTML dropdown (select) content for page list. * * @since 2.1.0 * @since 5.3.0 Formalized the existing `...$args` parameter by adding it * to the function signature. * * @uses Walker_PageDropdown to create HTML dropdown content. * @see Walker_PageDropdown::walk() for parameters and return description. * * @param mixed ...$args Elements array, maximum hierarchical depth and optional additional arguments. * @return string */ function walk_page_dropdown_tree( ...$args ) { if ( empty( $args[2]['walker'] ) ) { // The user's options are the third parameter. $walker = new Walker_PageDropdown(); } else { /** * @var Walker $walker */ $walker = $args[2]['walker']; } return $walker->walk( ...$args ); } // // Attachments. // /** * Displays an attachment page link using an image or icon. * * @since 2.0.0 * * @param int|WP_Post $post Optional. Post ID or post object. * @param bool $fullsize Optional. Whether to use full size. Default false. * @param bool $deprecated Deprecated. Not used. * @param bool $permalink Optional. Whether to include permalink. Default false. */ function the_attachment_link( $post = 0, $fullsize = false, $deprecated = false, $permalink = false ) { if ( ! empty( $deprecated ) ) { _deprecated_argument( __FUNCTION__, '2.5.0' ); } if ( $fullsize ) { echo wp_get_attachment_link( $post, 'full', $permalink ); } else { echo wp_get_attachment_link( $post, 'thumbnail', $permalink ); } } /** * Retrieves an attachment page link using an image or icon, if possible. * * @since 2.5.0 * @since 4.4.0 The `$post` parameter can now accept either a post ID or `WP_Post` object. * * @param int|WP_Post $post Optional. Post ID or post object. * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param bool $permalink Optional. Whether to add permalink to image. Default false. * @param bool $icon Optional. Whether the attachment is an icon. Default false. * @param string|false $text Optional. Link text to use. Activated by passing a string, false otherwise. * Default false. * @param array|string $attr Optional. Array or string of attributes. Default empty. * @return string HTML content. */ function wp_get_attachment_link( $post = 0, $size = 'thumbnail', $permalink = false, $icon = false, $text = false, $attr = '' ) { $_post = get_post( $post ); if ( empty( $_post ) || ( 'attachment' !== $_post->post_type ) || ! wp_get_attachment_url( $_post->ID ) ) { return __( 'Missing Attachment' ); } $url = wp_get_attachment_url( $_post->ID ); if ( $permalink ) { $url = get_attachment_link( $_post->ID ); } if ( $text ) { $link_text = $text; } elseif ( $size && 'none' !== $size ) { $link_text = wp_get_attachment_image( $_post->ID, $size, $icon, $attr ); } else { $link_text = ''; } if ( '' === trim( $link_text ) ) { $link_text = $_post->post_title; } if ( '' === trim( $link_text ) ) { $link_text = esc_html( pathinfo( get_attached_file( $_post->ID ), PATHINFO_FILENAME ) ); } /** * Filters the list of attachment link attributes. * * @since 6.2.0 * * @param array $attributes An array of attributes for the link markup, * keyed on the attribute name. * @param int $id Post ID. */ $attributes = apply_filters( 'wp_get_attachment_link_attributes', array( 'href' => $url ), $_post->ID ); $link_attributes = ''; foreach ( $attributes as $name => $value ) { $value = 'href' === $name ? esc_url( $value ) : esc_attr( $value ); $link_attributes .= ' ' . esc_attr( $name ) . "='" . $value . "'"; } $link_html = "<a$link_attributes>$link_text</a>"; /** * Filters a retrieved attachment page link. * * @since 2.7.0 * @since 5.1.0 Added the `$attr` parameter. * * @param string $link_html The page link HTML output. * @param int|WP_Post $post Post ID or object. Can be 0 for the current global post. * @param string|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param bool $permalink Whether to add permalink to image. Default false. * @param bool $icon Whether to include an icon. * @param string|false $text If string, will be link text. * @param array|string $attr Array or string of attributes. */ return apply_filters( 'wp_get_attachment_link', $link_html, $post, $size, $permalink, $icon, $text, $attr ); } /** * Wraps attachment in paragraph tag before content. * * @since 2.0.0 * * @param string $content * @return string */ function prepend_attachment( $content ) { $post = get_post(); if ( empty( $post->post_type ) || 'attachment' !== $post->post_type ) { return $content; } if ( wp_attachment_is( 'video', $post ) ) { $meta = wp_get_attachment_metadata( get_the_ID() ); $atts = array( 'src' => wp_get_attachment_url() ); if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) { $atts['width'] = (int) $meta['width']; $atts['height'] = (int) $meta['height']; } if ( has_post_thumbnail() ) { $atts['poster'] = wp_get_attachment_url( get_post_thumbnail_id() ); } $p = wp_video_shortcode( $atts ); } elseif ( wp_attachment_is( 'audio', $post ) ) { $p = wp_audio_shortcode( array( 'src' => wp_get_attachment_url() ) ); } else { $p = '<p class="attachment">'; // Show the medium sized image representation of the attachment if available, and link to the raw file. $p .= wp_get_attachment_link( 0, 'medium', false ); $p .= '</p>'; } /** * Filters the attachment markup to be prepended to the post content. * * @since 2.0.0 * * @see prepend_attachment() * * @param string $p The attachment HTML output. */ $p = apply_filters( 'prepend_attachment', $p ); return "$p\n$content"; } // // Misc. // /** * Retrieves protected post password form content. * * @since 1.0.0 * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @return string HTML content for password form for password-protected post. */ function get_the_password_form( $post = 0 ) { $post = get_post( $post ); $field_id = 'pwbox-' . ( empty( $post->ID ) ? wp_rand() : $post->ID ); $invalid_password = ''; $invalid_password_html = ''; $aria = ''; $class = ''; $redirect_field = ''; // If the referrer is the same as the current request, the user has entered an invalid password. if ( ! empty( $post->ID ) && wp_get_raw_referer() === get_permalink( $post->ID ) && isset( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] ) ) { /** * Filters the invalid password message shown on password-protected posts. * The filter is only applied if the post is password-protected. * * @since 6.8.0 * * @param string $text The message shown to users when entering an invalid password. * @param WP_Post $post Post object. */ $invalid_password = apply_filters( 'the_password_form_incorrect_password', __( 'Invalid password.' ), $post ); $invalid_password_html = '<div class="post-password-form-invalid-password" role="alert"><p id="error-' . $field_id . '">' . $invalid_password . '</p></div>'; $aria = ' aria-describedby="error-' . $field_id . '"'; $class = ' password-form-error'; } if ( ! empty( $post->ID ) ) { $redirect_field = sprintf( '<input type="hidden" name="redirect_to" value="%s" />', esc_attr( get_permalink( $post->ID ) ) ); } $output = '<form action="' . esc_url( site_url( 'wp-login.php?action=postpass', 'login_post' ) ) . '" class="post-password-form' . $class . '" method="post">' . $redirect_field . $invalid_password_html . ' <p>' . __( 'This content is password-protected. To view it, please enter the password below.' ) . '</p> <p><label for="' . $field_id . '">' . __( 'Password:' ) . ' <input name="post_password" id="' . $field_id . '" type="password" spellcheck="false" required size="20"' . $aria . ' /></label> <input type="submit" name="Submit" value="' . esc_attr_x( 'Enter', 'post password form' ) . '" /></p></form> '; /** * Filters the HTML output for the protected post password form. * * If modifying the password field, please note that the WordPress database schema * limits the password field to 255 characters regardless of the value of the * `minlength` or `maxlength` attributes or other validation that may be added to * the input. * * @since 2.7.0 * @since 5.8.0 Added the `$post` parameter. * @since 6.8.0 Added the `$invalid_password` parameter. * * @param string $output The password form HTML output. * @param WP_Post $post Post object. * @param string $invalid_password The invalid password message. */ return apply_filters( 'the_password_form', $output, $post, $invalid_password ); } /** * Determines whether the current post uses a page template. * * This template tag allows you to determine if you are in a page template. * You can optionally provide a template filename or array of template filenames * and then the check will be specific to that template. * * For more information on this and similar theme functions, check out * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ * Conditional Tags} article in the Theme Developer Handbook. * * @since 2.5.0 * @since 4.2.0 The `$template` parameter was changed to also accept an array of page templates. * @since 4.7.0 Now works with any post type, not just pages. * * @param string|string[] $template The specific template filename or array of templates to match. * @return bool True on success, false on failure. */ function is_page_template( $template = '' ) { if ( ! is_singular() ) { return false; } $page_template = get_page_template_slug( get_queried_object_id() ); if ( empty( $template ) ) { return (bool) $page_template; } if ( $template === $page_template ) { return true; } if ( is_array( $template ) ) { if ( ( in_array( 'default', $template, true ) && ! $page_template ) || in_array( $page_template, $template, true ) ) { return true; } } return ( 'default' === $template && ! $page_template ); } /** * Gets the specific template filename for a given post. * * @since 3.4.0 * @since 4.7.0 Now works with any post type, not just pages. * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @return string|false Page template filename. Returns an empty string when the default page template * is in use. Returns false if the post does not exist. */ function get_page_template_slug( $post = null ) { $post = get_post( $post ); if ( ! $post ) { return false; } $template = get_post_meta( $post->ID, '_wp_page_template', true ); if ( ! $template || 'default' === $template ) { return ''; } return $template; } /** * Retrieves formatted date timestamp of a revision (linked to that revisions's page). * * @since 2.6.0 * * @param int|WP_Post $revision Revision ID or revision object. * @param bool $link Optional. Whether to link to revision's page. Default true. * @return string|false i18n formatted datetimestamp or localized 'Current Revision'. */ function wp_post_revision_title( $revision, $link = true ) { $revision = get_post( $revision ); if ( ! $revision ) { return $revision; } if ( ! in_array( $revision->post_type, array( 'post', 'page', 'revision' ), true ) ) { return false; } /* translators: Revision date format, see https://www.php.net/manual/datetime.format.php */ $datef = _x( 'F j, Y @ H:i:s', 'revision date format' ); /* translators: %s: Revision date. */ $autosavef = __( '%s [Autosave]' ); /* translators: %s: Revision date. */ $currentf = __( '%s [Current Revision]' ); $date = date_i18n( $datef, strtotime( $revision->post_modified ) ); $edit_link = get_edit_post_link( $revision->ID ); if ( $link && current_user_can( 'edit_post', $revision->ID ) && $edit_link ) { $date = "<a href='$edit_link'>$date</a>"; } if ( ! wp_is_post_revision( $revision ) ) { $date = sprintf( $currentf, $date ); } elseif ( wp_is_post_autosave( $revision ) ) { $date = sprintf( $autosavef, $date ); } return $date; } /** * Retrieves formatted date timestamp of a revision (linked to that revisions's page). * * @since 3.6.0 * * @param int|WP_Post $revision Revision ID or revision object. * @param bool $link Optional. Whether to link to revision's page. Default true. * @return string|false gravatar, user, i18n formatted datetimestamp or localized 'Current Revision'. */ function wp_post_revision_title_expanded( $revision, $link = true ) { $revision = get_post( $revision ); if ( ! $revision ) { return $revision; } if ( ! in_array( $revision->post_type, array( 'post', 'page', 'revision' ), true ) ) { return false; } $author = get_the_author_meta( 'display_name', $revision->post_author ); /* translators: Revision date format, see https://www.php.net/manual/datetime.format.php */ $datef = _x( 'F j, Y @ H:i:s', 'revision date format' ); $gravatar = get_avatar( $revision->post_author, 24 ); $date = date_i18n( $datef, strtotime( $revision->post_modified ) ); $edit_link = get_edit_post_link( $revision->ID ); if ( $link && current_user_can( 'edit_post', $revision->ID ) && $edit_link ) { $date = "<a href='$edit_link'>$date</a>"; } $revision_date_author = sprintf( /* translators: Post revision title. 1: Author avatar, 2: Author name, 3: Time ago, 4: Date. */ __( '%1$s %2$s, %3$s ago (%4$s)' ), $gravatar, $author, human_time_diff( strtotime( $revision->post_modified_gmt ) ), $date ); /* translators: %s: Revision date with author avatar. */ $autosavef = __( '%s [Autosave]' ); /* translators: %s: Revision date with author avatar. */ $currentf = __( '%s [Current Revision]' ); if ( ! wp_is_post_revision( $revision ) ) { $revision_date_author = sprintf( $currentf, $revision_date_author ); } elseif ( wp_is_post_autosave( $revision ) ) { $revision_date_author = sprintf( $autosavef, $revision_date_author ); } /** * Filters the formatted author and date for a revision. * * @since 4.4.0 * * @param string $revision_date_author The formatted string. * @param WP_Post $revision The revision object. * @param bool $link Whether to link to the revisions page, as passed into * wp_post_revision_title_expanded(). */ return apply_filters( 'wp_post_revision_title_expanded', $revision_date_author, $revision, $link ); } /** * Displays a list of a post's revisions. * * Can output either a UL with edit links or a TABLE with diff interface, and * restore action links. * * @since 2.6.0 * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @param string $type 'all' (default), 'revision' or 'autosave' */ function wp_list_post_revisions( $post = 0, $type = 'all' ) { $post = get_post( $post ); if ( ! $post ) { return; } // $args array with (parent, format, right, left, type) deprecated since 3.6. if ( is_array( $type ) ) { $type = ! empty( $type['type'] ) ? $type['type'] : $type; _deprecated_argument( __FUNCTION__, '3.6.0' ); } $revisions = wp_get_post_revisions( $post->ID ); if ( ! $revisions ) { return; } $rows = ''; foreach ( $revisions as $revision ) { if ( ! current_user_can( 'read_post', $revision->ID ) ) { continue; } $is_autosave = wp_is_post_autosave( $revision ); if ( ( 'revision' === $type && $is_autosave ) || ( 'autosave' === $type && ! $is_autosave ) ) { continue; } $rows .= "\t<li>" . wp_post_revision_title_expanded( $revision ) . "</li>\n"; } echo "<div class='hide-if-js'><p>" . __( 'JavaScript must be enabled to use this feature.' ) . "</p></div>\n"; echo "<ul class='post-revisions hide-if-no-js'>\n"; echo $rows; echo '</ul>'; } /** * Retrieves the parent post object for the given post. * * @since 5.7.0 * * @param int|WP_Post|null $post Optional. Post ID or WP_Post object. Default is global $post. * @return WP_Post|null Parent post object, or null if there isn't one. */ function get_post_parent( $post = null ) { $wp_post = get_post( $post ); return ! empty( $wp_post->post_parent ) ? get_post( $wp_post->post_parent ) : null; } /** * Returns whether the given post has a parent post. * * @since 5.7.0 * * @param int|WP_Post|null $post Optional. Post ID or WP_Post object. Default is global $post. * @return bool Whether the post has a parent post. */ function has_post_parent( $post = null ) { return (bool) get_post_parent( $post ); }