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WordPress/wp-includes/post-template.php

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<?php
/**
* WordPress Post Template Functions.
*
* Gets content for the current post in the loop.
*
* @package WordPress
* @subpackage Template
*/
/**
* Display the ID of the current item in the WordPress Loop.
*
* @since 0.71
*/
function the_ID() {
echo get_the_ID();
}
/**
* Retrieve the ID of the current item in the WordPress Loop.
*
* @since 2.1.0
* @uses $post
*
* @return int
*/
function get_the_ID() {
return get_post()->ID;
}
/**
* Display or retrieve the current post title with optional content.
*
* @since 0.71
*
* @param string $before Optional. Content to prepend to the title.
* @param string $after Optional. Content to append to the title.
* @param bool $echo Optional, default to true.Whether to display or return.
* @return null|string Null on no title. String if $echo parameter is false.
*/
function the_title($before = '', $after = '', $echo = true) {
$title = get_the_title();
if ( strlen($title) == 0 )
return;
$title = $before . $title . $after;
if ( $echo )
echo $title;
else
return $title;
}
/**
* Sanitize the current title when retrieving or displaying.
*
* Works like {@link 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 {@link
* esc_attr()} before it is passed to the user or displayed. The default
* as with {@link 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 string|null Null on failure or display. String when echo is false.
*/
function the_title_attribute( $args = '' ) {
$defaults = array( 'before' => '', 'after' => '', 'echo' => true, 'post' => get_post() );
$r = wp_parse_args( $args, $defaults );
$title = get_the_title( $r['post'] );
if ( strlen( $title ) == 0 ) {
return;
}
$title = $r['before'] . $title . $r['after'];
$title = esc_attr( strip_tags( $title ) );
if ( $r['echo'] ) {
echo $title;
} else {
return $title;
}
}
/**
* Retrieve post title.
*
* If the post is protected and the visitor is not an admin, then "Protected"
* will be displayed before the post title. If the post is private, then
* "Private" will be located before the post title.
*
* @since 0.71
*
* @param int|WP_Post $post Optional. Post ID or post object.
* @return string
*/
function get_the_title( $post = 0 ) {
$post = get_post( $post );
$title = isset( $post->post_title ) ? $post->post_title : '';
$id = isset( $post->ID ) ? $post->ID : 0;
if ( ! is_admin() ) {
if ( ! empty( $post->post_password ) ) {
/**
* Filter 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'.
*/
$protected_title_format = apply_filters( 'protected_title_format', __( 'Protected: %s' ) );
$title = sprintf( $protected_title_format, $title );
} else if ( isset( $post->post_status ) && 'private' == $post->post_status ) {
/**
* Filter 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'.
*/
$private_title_format = apply_filters( 'private_title_format', __( 'Private: %s' ) );
$title = sprintf( $private_title_format, $title );
}
}
/**
* Filter the post title.
*
* @since 0.71
*
* @param string $title The post title.
* @param int $id The post ID.
*/
return apply_filters( 'the_title', $title, $id );
}
/**
* Display 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.
*
* Url is escaped to make it xml safe
*
* @since 1.5.0
*
* @param int|WP_Post $id Optional. Post ID or post object.
*/
function the_guid( $id = 0 ) {
echo esc_url( get_the_guid( $id ) );
}
/**
* Retrieve 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 $id Optional. Post ID or post object.
* @return string
*/
function get_the_guid( $id = 0 ) {
$post = get_post($id);
/**
* Filter the Global Unique Identifier (guid) of the post.
*
* @since 1.5.0
*
* @param string $post_guid Global Unique Identifier (guid) of the post.
*/
return apply_filters( 'get_the_guid', $post->guid );
}
/**
* Display 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 is false.
*/
function the_content( $more_link_text = null, $strip_teaser = false) {
$content = get_the_content( $more_link_text, $strip_teaser );
/**
* Filter the post content.
*
* @since 0.71
*
* @param string $content Content of the current post.
*/
$content = apply_filters( 'the_content', $content );
$content = str_replace( ']]>', ']]&gt;', $content );
echo $content;
}
/**
* Retrieve the post content.
*
* @since 0.71
*
* @param string $more_link_text Optional. Content for when there is more text.
* @param bool $stripteaser Optional. Strip teaser content before the more text. Default is false.
* @return string
*/
function get_the_content( $more_link_text = null, $strip_teaser = false ) {
global $page, $more, $preview, $pages, $multipage;
$post = get_post();
if ( null === $more_link_text )
$more_link_text = __( '(more&hellip;)' );
$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 ( $page > count( $pages ) ) // if the requested page doesn't exist
$page = count( $pages ); // give them the highest numbered page that DOES exist
$content = $pages[$page - 1];
if ( preg_match( '/<!--more(.*?)?-->/', $content, $matches ) ) {
$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 ( false !== strpos( $post->post_content, '<!--noteaser-->' ) && ( ! $multipage || $page == 1 ) )
$strip_teaser = true;
$teaser = $content[0];
if ( $more && $strip_teaser && $has_teaser )
$teaser = '';
$output .= $teaser;
if ( count( $content ) > 1 ) {
if ( $more ) {
$output .= '<span id="more-' . $post->ID . '"></span>' . $content[1];
} else {
if ( ! empty( $more_link_text ) )
/**
* Filter 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.
*/
$output .= apply_filters( 'the_content_more_link', ' <a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text );
$output = force_balance_tags( $output );
}
}
if ( $preview ) // preview fix for javascript bug with foreign languages
$output = preg_replace_callback( '/\%u([0-9A-F]{4})/', '_convert_urlencoded_to_entities', $output );
return $output;
}
/**
* Preview fix for javascript bug with foreign languages
*
* @since 3.1.0
* @access private
* @param array $match Match array from preg_replace_callback
* @return string
*/
function _convert_urlencoded_to_entities( $match ) {
return '&#' . base_convert( $match[1], 16, 10 ) . ';';
}
/**
* Display the post excerpt.
*
* @since 0.71
*/
function the_excerpt() {
/**
* Filter 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() );
}
/**
* Retrieve the post excerpt.
*
* @since 0.71
*
* @param mixed $deprecated Not used.
* @return string
*/
function get_the_excerpt( $deprecated = '' ) {
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '2.3' );
$post = get_post();
if ( post_password_required() ) {
return __( 'There is no excerpt because this is a protected post.' );
}
/**
* Filter the retrieved post excerpt.
*
* @since 1.2.0
*
* @param string $post_excerpt The post excerpt.
*/
return apply_filters( 'get_the_excerpt', $post->post_excerpt );
}
/**
* Whether post has excerpt.
*
* @since 2.3.0
*
* @param int|WP_Post $id Optional. Post ID or post object.
* @return bool
*/
function has_excerpt( $id = 0 ) {
$post = get_post( $id );
return ( !empty( $post->post_excerpt ) );
}
/**
* Display the classes for the post div.
*
* @since 2.7.0
*
* @param string|array $class One or more classes to add to the class list.
* @param int|WP_Post $post_id Optional. Post ID or post object.
*/
function post_class( $class = '', $post_id = null ) {
// Separates classes with a single space, collates classes for post DIV
echo 'class="' . join( ' ', get_post_class( $class, $post_id ) ) . '"';
}
/**
* Retrieve the classes for the post div as an array.
*
* The class names are many. If the post is a sticky, then the 'sticky'
* class name. The class 'hentry' is always added to each post. If the post has a
* post thumbnail, 'has-post-thumbnail' is added as a class. For each
* category, the class will be added with 'category-' with category slug is
* added. The tags are the same way as the categories with 'tag-' before the tag
* slug. All classes are passed through the filter, 'post_class' with the list
* of classes, followed by $class parameter value, with the post ID as the last
* parameter.
*
* @since 2.7.0
*
* @param string|array $class One or more classes to add to the class list.
* @param int|WP_Post $post_id Optional. Post ID or post object.
* @return array Array of classes.
*/
function get_post_class( $class = '', $post_id = null ) {
$post = get_post($post_id);
$classes = array();
if ( empty($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 requires password
if ( post_password_required( $post->ID ) ) {
$classes[] = 'post-password-required';
// Post thumbnails
} elseif ( ! is_attachment( $post ) && current_theme_supports( 'post-thumbnails' ) && has_post_thumbnail( $post->ID ) ) {
$classes[] = 'has-post-thumbnail';
}
// sticky for Sticky Posts
if ( is_sticky($post->ID) && is_home() && !is_paged() )
$classes[] = 'sticky';
// hentry for hAtom compliance
$classes[] = 'hentry';
// Categories
if ( is_object_in_taxonomy( $post->post_type, 'category' ) ) {
foreach ( (array) get_the_category($post->ID) as $cat ) {
if ( empty($cat->slug ) )
continue;
$classes[] = 'category-' . sanitize_html_class($cat->slug, $cat->term_id);
}
}
// Tags
if ( is_object_in_taxonomy( $post->post_type, 'post_tag' ) ) {
foreach ( (array) get_the_tags($post->ID) as $tag ) {
if ( empty($tag->slug ) )
continue;
$classes[] = 'tag-' . sanitize_html_class($tag->slug, $tag->term_id);
}
}
if ( !empty($class) ) {
if ( !is_array( $class ) )
$class = preg_split('#\s+#', $class);
$classes = array_merge($classes, $class);
}
$classes = array_map('esc_attr', $classes);
/**
* Filter the list of CSS classes for the current post.
*
* @since 2.7.0
*
* @param array $classes An array of post classes.
* @param string $class A comma-separated list of additional classes added to the post.
* @param int $post_id The post ID.
*/
return apply_filters( 'post_class', $classes, $class, $post->ID );
}
/**
* Display the classes for the body element.
*
* @since 2.8.0
*
* @param string|array $class One or more classes to add to the class list.
*/
function body_class( $class = '' ) {
// Separates classes with a single space, collates classes for body element
echo 'class="' . join( ' ', get_body_class( $class ) ) . '"';
}
/**
* Retrieve the classes for the body element as an array.
*
* @since 2.8.0
*
* @param string|array $class One or more classes to add to the class list.
* @return array Array of classes.
*/
function get_body_class( $class = '' ) {
global $wp_query, $wpdb;
$classes = array();
if ( is_rtl() )
$classes[] = 'rtl';
if ( is_front_page() )
$classes[] = 'home';
if ( is_home() )
$classes[] = 'blog';
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_single() ) {
$post_id = $wp_query->get_queried_object_id();
$post = $wp_query->get_queried_object();
$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_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 );
} else if ( 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 ) ) {
$classes[] = 'category-' . sanitize_html_class( $cat->slug, $cat->term_id );
$classes[] = 'category-' . $cat->term_id;
}
} elseif ( is_tag() ) {
$tags = $wp_query->get_queried_object();
$classes[] = 'tag';
if ( isset( $tags->term_id ) ) {
$classes[] = 'tag-' . sanitize_html_class( $tags->slug, $tags->term_id );
$classes[] = 'tag-' . $tags->term_id;
}
} elseif ( is_tax() ) {
$term = $wp_query->get_queried_object();
if ( isset( $term->term_id ) ) {
$classes[] = 'tax-' . sanitize_html_class( $term->taxonomy );
$classes[] = 'term-' . sanitize_html_class( $term->slug, $term->term_id );
$classes[] = 'term-' . $term->term_id;
}
}
} elseif ( is_page() ) {
$classes[] = 'page';
$page_id = $wp_query->get_queried_object_id();
$post = get_post($page_id);
$classes[] = 'page-id-' . $page_id;
if ( $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'page' AND post_status = 'publish' LIMIT 1", $page_id) ) )
$classes[] = 'page-parent';
if ( $post->post_parent ) {
$classes[] = 'page-child';
$classes[] = 'parent-pageid-' . $post->post_parent;
}
if ( is_page_template() ) {
$classes[] = 'page-template';
$classes[] = 'page-template-' . sanitize_html_class( str_replace( '.', '-', get_page_template_slug( $page_id ) ) );
} else {
$classes[] = 'page-template-default';
}
}
if ( is_user_logged_in() )
$classes[] = 'logged-in';
if ( is_admin_bar_showing() ) {
$classes[] = 'admin-bar';
$classes[] = 'no-customize-support';
}
if ( get_theme_mod( 'background_color' ) || get_background_image() )
$classes[] = 'custom-background';
$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;
}
if ( ! empty( $class ) ) {
if ( !is_array( $class ) )
$class = preg_split( '#\s+#', $class );
$classes = array_merge( $classes, $class );
} else {
// Ensure that we always coerce class to being an array.
$class = array();
}
$classes = array_map( 'esc_attr', $classes );
/**
* Filter the list of CSS body classes for the current post or page.
*
* @since 2.8.0
*
* @param array $classes An array of body classes.
* @param string $class A comma-separated list of additional classes added to the body.
*/
return apply_filters( 'body_class', $classes, $class );
}
/**
* Whether post requires password and correct password has been provided.
*
* @since 2.7.0
*
* @param int|WP_Post $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 ) )
return false;
if ( ! isset( $_COOKIE['wp-postpass_' . COOKIEHASH] ) )
return true;
require_once ABSPATH . 'wp-includes/class-phpass.php';
$hasher = new PasswordHash( 8, true );
$hash = wp_unslash( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] );
if ( 0 !== strpos( $hash, '$P$B' ) )
return true;
return ! $hasher->CheckPassword( $post->post_password, $hash );
}
//
// Page Template Functions for usage in Themes
//
/**
* The formatted output of a list of pages.
*
* Displays page links for paginated posts (i.e. includes the <!--nextpage-->.
* Quicktag one or more times). This tag must be within The Loop.
*
* The defaults for overwriting are:
* 'before' - Default is '<p> Pages:' (string). The html or text to prepend to
* each bookmarks.
* 'after' - Default is '</p>' (string). The html or text to append to each
* bookmarks.
* 'link_before' - Default is '' (string). The html or text to prepend to each
* Pages link inside the <a> tag. Also prepended to the current item, which
* is not linked.
* 'link_after' - Default is '' (string). The html or text to append to each
* Pages link inside the <a> tag. Also appended to the current item, which
* is not linked.
* 'next_or_number' - Default is 'number' (string). Indicates whether page
* numbers should be used. Valid values are number and next.
* 'separator' - Default is ' ' (string). Text used between pagination links.
* 'nextpagelink' - Default is 'Next Page' (string). Text for link to next page.
* of the bookmark.
* 'previouspagelink' - Default is 'Previous Page' (string). Text for link to
* previous page, if available.
* 'pagelink' - Default is '%' (String).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.
* 'echo' - Default is 1 (integer). When not 0, this triggers the HTML to be
* echoed and then returned.
*
* @since 1.2.0
*
* @param string|array $args Optional. Overwrite the defaults.
* @return string Formatted output in HTML.
*/
function wp_link_pages( $args = '' ) {
$defaults = array(
'before' => '<p>' . __( 'Pages:' ),
'after' => '</p>',
'link_before' => '',
'link_after' => '',
'next_or_number' => 'number',
'separator' => ' ',
'nextpagelink' => __( 'Next page' ),
'previouspagelink' => __( 'Previous page' ),
'pagelink' => '%',
'echo' => 1
);
$params = wp_parse_args( $args, $defaults );
/**
* Filter the arguments used in retrieving page links for paginated posts.
*
* @since 3.0.0
*
* @param array $params An array of arguments for page links for paginated posts.
*/
$r = apply_filters( 'wp_link_pages_args', $params );
global $page, $numpages, $multipage, $more;
$output = '';
if ( $multipage ) {
if ( 'number' == $r['next_or_number'] ) {
$output .= $r['before'];
for ( $i = 1; $i <= $numpages; $i++ ) {
$link = $r['link_before'] . str_replace( '%', $i, $r['pagelink'] ) . $r['link_after'];
if ( $i != $page || ! $more && 1 == $page ) {
$link = _wp_link_page( $i ) . $link . '</a>';
}
/**
* Filter 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 );
$output .= $r['separator'] . $link;
}
$output .= $r['after'];
} elseif ( $more ) {
$output .= $r['before'];
$prev = $page - 1;
if ( $prev ) {
$link = _wp_link_page( $prev ) . $r['link_before'] . $r['previouspagelink'] . $r['link_after'] . '</a>';
/** This filter is documented in wp-includes/post-template.php */
$link = apply_filters( 'wp_link_pages_link', $link, $prev );
$output .= $r['separator'] . $link;
}
$next = $page + 1;
if ( $next <= $numpages ) {
$link = _wp_link_page( $next ) . $r['link_before'] . $r['nextpagelink'] . $r['link_after'] . '</a>';
/** This filter is documented in wp-includes/post-template.php */
$link = apply_filters( 'wp_link_pages_link', $link, $next );
$output .= $r['separator'] . $link;
}
$output .= $r['after'];
}
}
/**
* Filter 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 $args An array of arguments.
*/
$html = apply_filters( 'wp_link_pages', $output, $args );
if ( $r['echo'] ) {
echo $html;
}
return $html;
}
/**
* Helper function for wp_link_pages().
*
* @since 3.1.0
* @access private
*
* @param int $i Page number.
* @return string Link.
*/
function _wp_link_page( $i ) {
global $wp_rewrite;
$post = get_post();
if ( 1 == $i ) {
$url = get_permalink();
} else {
if ( '' == get_option('permalink_structure') || in_array($post->post_status, array('draft', 'pending')) )
$url = add_query_arg( 'page', $i, get_permalink() );
elseif ( 'page' == get_option('show_on_front') && 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() ) {
$url = add_query_arg( array(
'preview' => 'true'
), $url );
if ( ( 'draft' !== $post->post_status ) && isset( $_GET['preview_id'], $_GET['preview_nonce'] ) ) {
$url = add_query_arg( array(
'preview_id' => wp_unslash( $_GET['preview_id'] ),
'preview_nonce' => wp_unslash( $_GET['preview_nonce'] )
), $url );
}
}
return '<a href="' . esc_url( $url ) . '">';
}
//
// Post-meta: Custom per-post fields.
//
/**
* Retrieve post custom meta data field.
*
* @since 1.5.0
*
* @param string $key Meta data key name.
* @return bool|string|array Array of values or single value, if only one element exists. False will be returned if 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];
}
/**
* Display list of post custom fields.
*
* @internal This will probably change at some point...
* @since 1.2.0
* @uses apply_filters() Calls 'the_meta_key' on list item HTML content, with key and value as separate parameters.
*/
function the_meta() {
if ( $keys = get_post_custom_keys() ) {
echo "<ul class='post-meta'>\n";
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,', ');
/**
* Filter 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 $value Meta value.
*/
echo apply_filters( 'the_meta_key', "<li><span class='post-meta-key'>$key:</span> $value</li>\n", $key, $value );
}
echo "</ul>\n";
}
}
//
// Pages
//
/**
* Retrieve or display list of pages as a dropdown (select list).
*
* @since 2.1.0
*
* @param array|string $args Optional. Override default arguments.
* @return string HTML content, if not displaying.
*/
function wp_dropdown_pages( $args = '' ) {
$defaults = array(
'depth' => 0, 'child_of' => 0,
'selected' => 0, 'echo' => 1,
'name' => 'page_id', 'id' => '',
'show_option_none' => '', 'show_option_no_change' => '',
'option_none_value' => ''
);
$r = wp_parse_args( $args, $defaults );
$pages = get_pages( $r );
$output = '';
// Back-compat with old system where both id and name were based on $name argument
if ( empty( $r['id'] ) ) {
$r['id'] = $r['name'];
}
if ( ! empty( $pages ) ) {
$output = "<select name='" . esc_attr( $r['name'] ) . "' id='" . esc_attr( $r['id'] ) . "'>\n";
if ( $r['show_option_no_change'] ) {
$output .= "\t<option value=\"-1\">" . $r['show_option_no_change'] . "</option>\n";
}
if ( $r['show_option_none'] ) {
$output .= "\t<option value=\"" . esc_attr( $r['option_none_value'] ) . '">' . $r['show_option_none'] . "</option>\n";
}
$output .= walk_page_dropdown_tree( $pages, $r['depth'], $r );
$output .= "</select>\n";
}
/**
* Filter the HTML output of a list of pages as a drop down.
*
* @since 2.1.0
*
* @param string $output HTML output for drop down list of pages.
*/
$html = apply_filters( 'wp_dropdown_pages', $output );
if ( $r['echo'] ) {
echo $html;
}
return $html;
}
/**
* Retrieve or display list of pages in list (li) format.
*
* @since 1.5.0
*
* @see get_pages()
*
* @param array|string $args {
* Array or string of arguments. Optional.
*
* @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 $post_status Comma-separated list 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 Walker $walker Walker instance to use for listing pages. Default empty (Walker_Page).
* }
* @return string HTML list of pages.
*/
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' => '', 'walker' => '',
);
$r = wp_parse_args( $args, $defaults );
$output = '';
$current_page = 0;
// sanitize, mostly to keep spaces out
$r['exclude'] = preg_replace( '/[^0-9,]/', '', $r['exclude'] );
// Allow plugins to filter an array of excluded pages (but don't put a nullstring into the array)
$exclude_array = ( $r['exclude'] ) ? explode( ',', $r['exclude'] ) : array();
/**
* Filter the array of pages to exclude from the pages list.
*
* @since 2.1.0
*
* @param array $exclude_array An array of page IDs to exclude.
*/
$r['exclude'] = implode( ',', apply_filters( 'wp_list_pages_excludes', $exclude_array ) );
// Query pages.
$r['hierarchical'] = 0;
$pages = get_pages( $r );
if ( ! empty( $pages ) ) {
if ( $r['title_li'] ) {
$output .= '<li class="pagenav">' . $r['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, $r['depth'], $current_page, $r );
if ( $r['title_li'] ) {
$output .= '</ul></li>';
}
}
/**
* Filter the HTML output of the pages to list.
*
* @since 1.5.1
*
* @see wp_list_pages()
*
* @param string $output HTML output of the pages list.
* @param array $r An array of page-listing arguments.
*/
$html = apply_filters( 'wp_list_pages', $output, $r );
if ( $r['echo'] ) {
echo $html;
} else {
return $html;
}
}
/**
* Display or retrieve list of pages with optional home link.
*
* The arguments are listed below and part of the arguments are for {@link
* wp_list_pages()} function. Check that function for more info on those
* arguments.
*
* <ul>
* <li><strong>sort_column</strong> - How to sort the list of pages. Defaults
* to 'menu_order, post_title'. Use column for posts table.</li>
* <li><strong>menu_class</strong> - Class to use for the div ID which contains
* the page list. Defaults to 'menu'.</li>
* <li><strong>echo</strong> - Whether to echo list or return it. Defaults to
* echo.</li>
* <li><strong>link_before</strong> - Text before show_home argument text.</li>
* <li><strong>link_after</strong> - Text after show_home argument text.</li>
* <li><strong>show_home</strong> - If you set this argument, then it will
* display the link to the home page. The show_home argument really just needs
* to be set to the value of the text of the link.</li>
* </ul>
*
* @since 2.7.0
*
* @param array|string $args
* @return string html menu
*/
function wp_page_menu( $args = array() ) {
$defaults = array('sort_column' => 'menu_order, post_title', 'menu_class' => 'menu', 'echo' => true, 'link_before' => '', 'link_after' => '');
$args = wp_parse_args( $args, $defaults );
/**
* Filter 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.
*/
$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="' . 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 (get_option('show_on_front') == 'page') {
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'] = '';
$menu .= str_replace( array( "\r", "\n", "\t" ), '', wp_list_pages($list_args) );
if ( $menu )
$menu = '<ul>' . $menu . '</ul>';
$menu = '<div class="' . esc_attr($args['menu_class']) . '">' . $menu . "</div>\n";
/**
* Filter 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.
*/
$menu = apply_filters( 'wp_page_menu', $menu, $args );
if ( $args['echo'] )
echo $menu;
else
return $menu;
}
//
// Page helpers
//
/**
* Retrieve HTML list content for page list.
*
* @uses Walker_Page to create HTML list content.
* @since 2.1.0
* @see Walker_Page::walk() for parameters and return description.
*/
function walk_page_tree($pages, $depth, $current_page, $r) {
if ( empty($r['walker']) )
$walker = new Walker_Page;
else
$walker = $r['walker'];
foreach ( (array) $pages as $page ) {
if ( $page->post_parent )
$r['pages_with_children'][ $page->post_parent ] = true;
}
$args = array($pages, $depth, $r, $current_page);
return call_user_func_array(array($walker, 'walk'), $args);
}
/**
* Retrieve HTML dropdown (select) content for page list.
*
* @uses Walker_PageDropdown to create HTML dropdown content.
* @since 2.1.0
* @see Walker_PageDropdown::walk() for parameters and return description.
*/
function walk_page_dropdown_tree() {
$args = func_get_args();
if ( empty($args[2]['walker']) ) // the user's options are the third parameter
$walker = new Walker_PageDropdown;
else
$walker = $args[2]['walker'];
return call_user_func_array(array($walker, 'walk'), $args);
}
/**
* Create HTML list of pages.
*
* @since 2.1.0
* @uses Walker
*/
class Walker_Page extends Walker {
/**
* @see Walker::$tree_type
* @since 2.1.0
* @var string
*/
var $tree_type = 'page';
/**
* @see Walker::$db_fields
* @since 2.1.0
* @todo Decouple this.
* @var array
*/
var $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
/**
* @see Walker::start_lvl()
* @since 2.1.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of page. Used for padding.
* @param array $args
*/
function start_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
$output .= "\n$indent<ul class='children'>\n";
}
/**
* @see Walker::end_lvl()
* @since 2.1.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param int $depth Depth of page. Used for padding.
* @param array $args
*/
function end_lvl( &$output, $depth = 0, $args = array() ) {
$indent = str_repeat("\t", $depth);
$output .= "$indent</ul>\n";
}
/**
* @see Walker::start_el()
* @since 2.1.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $page Page data object.
* @param int $depth Depth of page. Used for padding.
* @param int $current_page Page ID.
* @param array $args
*/
function start_el( &$output, $page, $depth = 0, $args = array(), $current_page = 0 ) {
if ( $depth ) {
$indent = str_repeat( "\t", $depth );
} else {
$indent = '';
}
$css_class = array( 'page_item', 'page-item-' . $page->ID );
if ( isset( $args['pages_with_children'][ $page->ID ] ) ) {
$css_class[] = 'page_item_has_children';
}
if ( ! empty( $current_page ) ) {
$_current_page = get_post( $current_page );
if ( in_array( $page->ID, $_current_page->ancestors ) ) {
$css_class[] = 'current_page_ancestor';
}
if ( $page->ID == $current_page ) {
$css_class[] = 'current_page_item';
} elseif ( $_current_page && $page->ID == $_current_page->post_parent ) {
$css_class[] = 'current_page_parent';
}
} elseif ( $page->ID == get_option('page_for_posts') ) {
$css_class[] = 'current_page_parent';
}
/**
* Filter the list of CSS classes to include with each page item in the list.
*
* @since 2.8.0
*
* @see wp_list_pages()
*
* @param array $css_class An array of CSS classes to be applied
* to each list item.
* @param WP_Post $page Page data object.
* @param int $depth Depth of page, used for padding.
* @param array $args An array of arguments.
* @param int $current_page ID of the current page.
*/
$css_classes = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
if ( '' === $page->post_title ) {
$page->post_title = sprintf( __( '#%d (no title)' ), $page->ID );
}
$args['link_before'] = empty( $args['link_before'] ) ? '' : $args['link_before'];
$args['link_after'] = empty( $args['link_after'] ) ? '' : $args['link_after'];
/** This filter is documented in wp-includes/post-template.php */
$output .= $indent . sprintf(
'<li class="%s"><a href="%s">%s%s%s</a>',
$css_classes,
get_permalink( $page->ID ),
$args['link_before'],
apply_filters( 'the_title', $page->post_title, $page->ID ),
$args['link_after']
);
if ( ! empty( $args['show_date'] ) ) {
if ( 'modified' == $args['show_date'] ) {
$time = $page->post_modified;
} else {
$time = $page->post_date;
}
$date_format = empty( $args['date_format'] ) ? '' : $args['date_format'];
$output .= " " . mysql2date( $date_format, $time );
}
}
/**
* @see Walker::end_el()
* @since 2.1.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $page Page data object. Not used.
* @param int $depth Depth of page. Not Used.
* @param array $args
*/
function end_el( &$output, $page, $depth = 0, $args = array() ) {
$output .= "</li>\n";
}
}
/**
* Create HTML dropdown list of pages.
*
* @since 2.1.0
* @uses Walker
*/
class Walker_PageDropdown extends Walker {
/**
* @see Walker::$tree_type
* @since 2.1.0
* @var string
*/
var $tree_type = 'page';
/**
* @see Walker::$db_fields
* @since 2.1.0
* @todo Decouple this
* @var array
*/
var $db_fields = array ('parent' => 'post_parent', 'id' => 'ID');
/**
* @see Walker::start_el()
* @since 2.1.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $page Page data object.
* @param int $depth Depth of page in reference to parent pages. Used for padding.
* @param array $args Uses 'selected' argument for selected page to set selected HTML attribute for option element.
* @param int $id
*/
function start_el( &$output, $page, $depth = 0, $args = array(), $id = 0 ) {
$pad = str_repeat('&nbsp;', $depth * 3);
$output .= "\t<option class=\"level-$depth\" value=\"$page->ID\"";
if ( $page->ID == $args['selected'] )
$output .= ' selected="selected"';
$output .= '>';
$title = $page->post_title;
if ( '' === $title ) {
$title = sprintf( __( '#%d (no title)' ), $page->ID );
}
/**
* Filter the page title when creating an HTML drop-down list of pages.
*
* @since 3.1.0
*
* @param string $title Page title.
* @param object $page Page data object.
*/
$title = apply_filters( 'list_pages', $title, $page );
$output .= $pad . esc_html( $title );
$output .= "</option>\n";
}
}
//
// Attachments
//
/**
* Display an attachment page link using an image or icon.
*
* @since 2.0.0
*
* @param int|WP_Post $id Optional. Post ID or post object.
* @param bool $fullsize Optional, default is false. Whether to use full size.
* @param bool $deprecated Deprecated. Not used.
* @param bool $permalink Optional, default is false. Whether to include permalink.
*/
function the_attachment_link( $id = 0, $fullsize = false, $deprecated = false, $permalink = false ) {
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '2.5' );
if ( $fullsize )
echo wp_get_attachment_link($id, 'full', $permalink);
else
echo wp_get_attachment_link($id, 'thumbnail', $permalink);
}
/**
* Retrieve an attachment page link using an image or icon, if possible.
*
* @since 2.5.0
* @uses apply_filters() Calls 'wp_get_attachment_link' filter on HTML content with same parameters as function.
*
* @param int|WP_Post $id Optional. Post ID or post object.
* @param string $size Optional, default is 'thumbnail'. Size of image, either array or string.
* @param bool $permalink Optional, default is false. Whether to add permalink to image.
* @param bool $icon Optional, default is false. Whether to include icon.
* @param string|bool $text Optional, default is false. If string, then will be link text.
* @return string HTML content.
*/
function wp_get_attachment_link( $id = 0, $size = 'thumbnail', $permalink = false, $icon = false, $text = false ) {
$id = intval( $id );
$_post = get_post( $id );
if ( empty( $_post ) || ( 'attachment' != $_post->post_type ) || ! $url = wp_get_attachment_url( $_post->ID ) )
return __( 'Missing Attachment' );
if ( $permalink )
$url = get_attachment_link( $_post->ID );
if ( $text )
$link_text = $text;
elseif ( $size && 'none' != $size )
$link_text = wp_get_attachment_image( $id, $size, $icon );
else
$link_text = '';
if ( trim( $link_text ) == '' )
$link_text = $_post->post_title;
/**
* Filter a retrieved attachment page link.
*
* @since 2.7.0
*
* @param string $link_html The page link HTML output.
* @param int $id Post ID.
* @param string $size Image size. Default 'thumbnail'.
* @param bool $permalink Whether to add permalink to image. Default false.
* @param bool $icon Whether to include an icon. Default false.
* @param string|bool $text If string, will be link text. Default false.
*/
return apply_filters( 'wp_get_attachment_link', "<a href='$url'>$link_text</a>", $id, $size, $permalink, $icon, $text );
}
/**
* Wrap attachment in <<p>> element before content.
*
* @since 2.0.0
*
* @param string $content
* @return string
*/
function prepend_attachment($content) {
$post = get_post();
if ( empty($post->post_type) || $post->post_type != 'attachment' )
return $content;
if ( 0 === strpos( $post->post_mime_type, 'video' ) ) {
$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'];
}
$p = wp_video_shortcode( $atts );
} elseif ( 0 === strpos( $post->post_mime_type, 'audio' ) ) {
$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>';
}
/**
* Filter 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
//
/**
* Retrieve protected post password form content.
*
* @since 1.0.0
* @uses apply_filters() Calls 'the_password_form' filter on output.
* @param int|WP_Post $post Optional. A post ID or post object.
* @return string HTML content for password form for password protected post.
*/
function get_the_password_form( $post = 0 ) {
$post = get_post( $post );
$label = 'pwbox-' . ( empty($post->ID) ? rand() : $post->ID );
$output = '<form action="' . esc_url( site_url( 'wp-login.php?action=postpass', 'login_post' ) ) . '" class="post-password-form" method="post">
<p>' . __( 'This content is password protected. To view it please enter your password below:' ) . '</p>
<p><label for="' . $label . '">' . __( 'Password:' ) . ' <input name="post_password" id="' . $label . '" type="password" size="20" /></label> <input type="submit" name="Submit" value="' . esc_attr__( 'Submit' ) . '" /></p></form>
';
/**
* Filter the HTML output for the protected post password form.
*
* If modifying the password field, please note that the core database schema
* limits the password field to 20 characters regardless of the value of the
* size attribute in the form input.
*
* @since 2.7.0
*
* @param string $output The password form HTML output.
*/
return apply_filters( 'the_password_form', $output );
}
/**
* Whether currently in a page template.
*
* This template tag allows you to determine if you are in a page template.
* You can optionally provide a template name and then the check will be
* specific to that template.
*
* @since 2.5.0
* @uses $wp_query
*
* @param string $template The specific template name if specific matching is required.
* @return bool True on success, false on failure.
*/
function is_page_template( $template = '' ) {
if ( ! is_page() )
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 ( 'default' == $template && ! $page_template )
return true;
return false;
}
/**
* Get the specific template name for a page.
*
* @since 3.4.0
*
* @param int $post_id Optional. The page ID to check. Defaults to the current post, when used in the loop.
* @return string|bool Page template filename. Returns an empty string when the default page template
* is in use. Returns false if the post is not a page.
*/
function get_page_template_slug( $post_id = null ) {
$post = get_post( $post_id );
if ( ! $post || 'page' != $post->post_type )
return false;
$template = get_post_meta( $post->ID, '_wp_page_template', true );
if ( ! $template || 'default' == $template )
return '';
return $template;
}
/**
* Retrieve formatted date timestamp of a revision (linked to that revisions's page).
*
* @since 2.6.0
*
* @uses date_i18n()
*
* @param int|object $revision Revision ID or revision object.
* @param bool $link Optional, default is true. Link to revisions's page?
* @return string i18n formatted datetimestamp or localized 'Current Revision'.
*/
function wp_post_revision_title( $revision, $link = true ) {
if ( !$revision = get_post( $revision ) )
return $revision;
if ( !in_array( $revision->post_type, array( 'post', 'page', 'revision' ) ) )
return false;
/* translators: revision date format, see http://php.net/date */
$datef = _x( 'j F, Y @ G:i', 'revision date format');
/* translators: 1: date */
$autosavef = _x( '%1$s [Autosave]', 'post revision title extra' );
/* translators: 1: date */
$currentf = _x( '%1$s [Current Revision]', 'post revision title extra' );
$date = date_i18n( $datef, strtotime( $revision->post_modified ) );
if ( $link && current_user_can( 'edit_post', $revision->ID ) && $link = get_edit_post_link( $revision->ID ) )
$date = "<a href='$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;
}
/**
* Retrieve formatted date timestamp of a revision (linked to that revisions's page).
*
* @since 3.6.0
*
* @uses date_i18n()
*
* @param int|object $revision Revision ID or revision object.
* @param bool $link Optional, default is true. Link to revisions's page?
* @return string gravatar, user, i18n formatted datetimestamp or localized 'Current Revision'.
*/
function wp_post_revision_title_expanded( $revision, $link = true ) {
if ( !$revision = get_post( $revision ) )
return $revision;
if ( !in_array( $revision->post_type, array( 'post', 'page', 'revision' ) ) )
return false;
$author = get_the_author_meta( 'display_name', $revision->post_author );
/* translators: revision date format, see http://php.net/date */
$datef = _x( 'j F, Y @ G:i:s', 'revision date format');
$gravatar = get_avatar( $revision->post_author, 24 );
$date = date_i18n( $datef, strtotime( $revision->post_modified ) );
if ( $link && current_user_can( 'edit_post', $revision->ID ) && $link = get_edit_post_link( $revision->ID ) )
$date = "<a href='$link'>$date</a>";
$revision_date_author = sprintf(
/* translators: post revision title: 1: author avatar, 2: author name, 3: time ago, 4: date */
_x( '%1$s %2$s, %3$s ago (%4$s)', 'post revision title' ),
$gravatar,
$author,
human_time_diff( strtotime( $revision->post_modified ), current_time( 'timestamp' ) ),
$date
);
$autosavef = __( '%1$s [Autosave]' );
$currentf = __( '%1$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 );
return $revision_date_author;
}
/**
* Display 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
*
* @uses wp_get_post_revisions()
* @uses wp_post_revision_title_expanded()
* @uses get_edit_post_link()
* @uses get_the_author_meta()
*
* @param int|WP_Post $post_id Optional. Post ID or post object.
* @param string $type 'all' (default), 'revision' or 'autosave'
* @return null
*/
function wp_list_post_revisions( $post_id = 0, $type = 'all' ) {
if ( ! $post = get_post( $post_id ) )
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' );
}
if ( ! $revisions = wp_get_post_revisions( $post->ID ) )
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>";
}
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