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post-template.php
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1751 lines (1536 loc) · 52.2 KB
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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|bool The ID of the current item in the WordPress Loop. False if $post is not set.
*/
function get_the_ID() {
$post = get_post();
return ! empty( $post ) ? $post->ID : false;
}
/**
* 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 WP_Post object. Default is global $post.
* @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'.
* @param WP_Post $post Current post object.
*/
$protected_title_format = apply_filters( 'protected_title_format', __( 'Protected: %s' ), $post );
$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'.
* @param WP_Post $post Current post object.
*/
$private_title_format = apply_filters( 'private_title_format', __( 'Private: %s' ), $post );
$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( ']]>', ']]>', $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…)' );
$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 );
}
}
return $output;
}
/**
* 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 ( empty( $post ) ) {
return '';
}
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 ) ) {
if ( is_home() && ! is_paged() ) {
$classes[] = 'sticky';
} elseif ( is_admin() ) {
$classes[] = 'status-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.
*/
$classes = apply_filters( 'post_class', $classes, $class, $post->ID );
return array_unique( $classes );
}
/**
* 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 ( get_pages( array( 'parent' => $page_id, 'number' => 1 ) ) ) {
$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.
*/
$classes = apply_filters( 'body_class', $classes, $class );
return array_unique( $classes );
}
/**
* 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 . WPINC . '/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.
*
* @since 1.2.0
*
* @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 $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 = '' ) {
$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).
* }