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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 Optional. Override the defaults.
* @return string|null Null on failure or display. String when echo is false.
*/
function the_title_attribute( $args = '' ) {
$title = get_the_title();
if ( strlen($title) == 0 )
return;
$defaults = array('before' => '', 'after' => '', 'echo' => true);
$r = wp_parse_args($args, $defaults);
extract( $r, EXTR_SKIP );
$title = $before . $title . $after;
$title = esc_attr(strip_tags($title));
if ( $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 mixed $post Optional. Post ID or 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 ) ) {
$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 ) {
$private_title_format = apply_filters( 'private_title_format', __( 'Private: %s' ) );
$title = sprintf( $private_title_format, $title );
}
}
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 $id Optional. Post ID.
*/
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 $id Optional. Post ID.
* @return string
*/
function get_the_guid( $id = 0 ) {
$post = get_post($id);
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 $stripteaser Optional. Strip teaser content before the more text. Default is false.
*/
function the_content($more_link_text = null, $stripteaser = false) {
$content = get_the_content($more_link_text, $stripteaser);
$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, $stripteaser = false ) {
global $more, $page, $pages, $multipage, $preview;
$post = get_post();
if ( null === $more_link_text )
$more_link_text = __( '(more...)' );
$output = '';
$hasTeaser = false;
// If post password required and it doesn't match the cookie.
if ( post_password_required() )
return get_the_password_form();
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])));
$hasTeaser = true;
} else {
$content = array($content);
}
if ( (false !== strpos($post->post_content, '<!--noteaser-->') && ((!$multipage) || ($page==1))) )
$stripteaser = true;
$teaser = $content[0];
if ( $more && $stripteaser && $hasTeaser )
$teaser = '';
$output .= $teaser;
if ( count($content) > 1 ) {
if ( $more ) {
$output .= '<span id="more-' . $post->ID . '"></span>' . $content[1];
} else {
if ( ! empty($more_link_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
* @uses apply_filters() Calls 'the_excerpt' hook on post excerpt.
*/
function the_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.' );
}
return apply_filters( 'get_the_excerpt', $post->post_excerpt );
}
/**
* Whether post has excerpt.
*
* @since 2.3.0
*
* @param int $id Optional. Post ID.
* @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 $post_id An optional post ID.
*/
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 add are many. If the post is a sticky, then the 'sticky'
* class name. The class 'hentry' is always added to each post. 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 $post_id An optional post ID.
* @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) )
$classes[] = 'post-password-required';
// sticky for Sticky Posts
if ( is_sticky($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);
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';
$classes[] = 'post-type-archive-' . sanitize_html_class( get_query_var( '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 ) {
$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 );
return apply_filters( 'body_class', $classes, $class );
}
/**
* Whether post requires password and correct password has been provided.
*
* @since 2.7.0
*
* @param int|object $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 ) {
global $wp_hasher;
$post = get_post($post);
if ( empty( $post->post_password ) )
return false;
if ( ! isset( $_COOKIE['wp-postpass_' . COOKIEHASH] ) )
return true;
if ( empty( $wp_hasher ) ) {
require_once( ABSPATH . 'wp-includes/class-phpass.php');
// By default, use the portable hash from phpass
$wp_hasher = new PasswordHash(8, true);
}
$hash = stripslashes( $_COOKIE[ 'wp-postpass_' . COOKIEHASH ] );
return ! $wp_hasher->CheckPassword( $post->post_password, $hash );
}
/**
* Page Template Functions for usage in Themes
*
* @package WordPress
* @subpackage Template
*/
/**
* 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:
* 'next_or_number' - Default is 'number' (string). Indicates whether page
* numbers should be used. Valid values are number and next.
* '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.
* '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.
*
* @since 1.2.0
* @access private
*
* @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', 'nextpagelink' => __('Next page'),
'previouspagelink' => __('Previous page'), 'pagelink' => '%',
'echo' => 1
);
$r = wp_parse_args( $args, $defaults );
$r = apply_filters( 'wp_link_pages_args', $r );
extract( $r, EXTR_SKIP );
global $page, $numpages, $multipage, $more, $pagenow;
$output = '';
if ( $multipage ) {
if ( 'number' == $next_or_number ) {
$output .= $before;
for ( $i = 1; $i < ($numpages+1); $i = $i + 1 ) {
$j = str_replace('%',$i,$pagelink);
$output .= ' ';
if ( ($i != $page) || ((!$more) && ($page==1)) ) {
$output .= _wp_link_page($i);
}
$output .= $link_before . $j . $link_after;
if ( ($i != $page) || ((!$more) && ($page==1)) )
$output .= '</a>';
}
$output .= $after;
} else {
if ( $more ) {
$output .= $before;
$i = $page - 1;
if ( $i && $more ) {
$output .= _wp_link_page($i);
$output .= $link_before. $previouspagelink . $link_after . '</a>';
}
$i = $page + 1;
if ( $i <= $numpages && $more ) {
$output .= _wp_link_page($i);
$output .= $link_before. $nextpagelink . $link_after . '</a>';
}
$output .= $after;
}
}
}
if ( $echo )
echo $output;
return $output;
}
/**
* 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');
}
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,', ');
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 );
extract( $r, EXTR_SKIP );
$pages = get_pages($r);
$output = '';
// Back-compat with old system where both id and name were based on $name argument
if ( empty($id) )
$id = $name;
if ( ! empty($pages) ) {
$output = "<select name='" . esc_attr( $name ) . "' id='" . esc_attr( $id ) . "'>\n";
if ( $show_option_no_change )
$output .= "\t<option value=\"-1\">$show_option_no_change</option>";
if ( $show_option_none )
$output .= "\t<option value=\"" . esc_attr($option_none_value) . "\">$show_option_none</option>\n";
$output .= walk_page_dropdown_tree($pages, $depth, $r);
$output .= "</select>\n";
}
$output = apply_filters('wp_dropdown_pages', $output);
if ( $echo )
echo $output;
return $output;
}
/**
* Retrieve or display list of pages in list (li) format.
*
* @since 1.5.0
*
* @param array|string $args Optional. Override default arguments.
* @return string HTML content, if not displaying.
*/
function wp_list_pages($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 );
extract( $r, EXTR_SKIP );
$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();
$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 = $wp_query->get_queried_object_id();
$output .= walk_page_tree($pages, $r['depth'], $current_page, $r);
if ( $r['title_li'] )
$output .= '</ul></li>';
}
$output = apply_filters('wp_list_pages', $output, $r);
if ( $r['echo'] )
echo $output;
else
return $output;
}
/**
* 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 page 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 );
$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 ' . $class . '><a href="' . home_url( '/' ) . '" title="' . esc_attr($text) . '">' . $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";
$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'];
$args = array($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'), $args);
}
/**
* Create HTML list of pages.
*
* @package WordPress
* @since 2.1.0
* @uses Walker
*/
class Walker_Page extends Walker {
/**
* @see Walker::$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, $args, $current_page = 0 ) {
if ( $depth )
$indent = str_repeat("\t", $depth);
else
$indent = '';
extract($args, EXTR_SKIP);
$css_class = array('page_item', 'page-item-'.$page->ID);
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';
}
$css_class = implode( ' ', apply_filters( 'page_css_class', $css_class, $page, $depth, $args, $current_page ) );
$output .= $indent . '<li class="' . $css_class . '"><a href="' . get_permalink($page->ID) . '">' . $link_before . apply_filters( 'the_title', $page->post_title, $page->ID ) . $link_after . '</a>';
if ( !empty($show_date) ) {
if ( 'modified' == $show_date )
$time = $page->post_modified;
else
$time = $page->post_date;
$output .= " " . mysql2date($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() ) {
$output .= "</li>\n";
}
}
/**
* Create HTML dropdown list of pages.
*
* @package WordPress
* @since 2.1.0
* @uses Walker
*/
class Walker_PageDropdown extends Walker {
/**
* @see Walker::$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, $args, $id = 0) {
$pad = str_repeat(' ', $depth * 3);
$output .= "\t<option class=\"level-$depth\" value=\"$page->ID\"";
if ( $page->ID == $args['selected'] )
$output .= ' selected="selected"';
$output .= '>';
$title = apply_filters( 'list_pages', $page->post_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 $id Optional. Post ID.
* @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 $id Optional. Post ID.
* @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 );
$post_title = esc_attr( $_post->post_title );
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 = $_post->post_title;
return apply_filters( 'wp_get_attachment_link', "<a href='$url' title='$post_title'>$link_text</a>", $id, $size, $permalink, $icon, $text );
}
/**
* Wrap attachment in <<p>> element before content.
*
* @since 2.0.0
* @uses apply_filters() Calls 'prepend_attachment' hook on HTML content.
*
* @param string $content
* @return string
*/
function prepend_attachment($content) {
$post = get_post();
if ( empty($post->post_type) || $post->post_type != 'attachment' )
return $content;
$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>';
$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.
*
* @return string HTML content for password form for password protected post.
*/
function get_the_password_form() {
$post = get_post();
$label = 'pwbox-' . ( empty($post->ID) ? rand() : $post->ID );
$output = '<form action="' . esc_url( site_url( 'wp-login.php?action=postpass', 'login_post' ) ) . '" method="post">
<p>' . __("This post 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>
';
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 False on failure, true if success.
*/
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 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 ( '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).
*
* @package WordPress
* @subpackage Post_Revisions
* @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 */
$autosavef = __( '%1$s [Autosave]' );
/* translators: 1: date */
$currentf = __( '%1$s [Current Revision]' );
$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;
}
/**
* 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.
*
* Second argument controls parameters:
* (bool) parent : include the parent (the "Current Revision") in the list.
* (string) format : 'list' or 'form-table'. 'list' outputs UL, 'form-table'
* outputs TABLE with UI.
* (int) right : what revision is currently being viewed - used in
* form-table format.
* (int) left : what revision is currently being diffed against right -
* used in form-table format.
*
* @package WordPress
* @subpackage Post_Revisions
* @since 2.6.0
*
* @uses wp_get_post_revisions()
* @uses wp_post_revision_title()
* @uses get_edit_post_link()
* @uses get_the_author_meta()
*
* @todo split into two functions (list, form-table) ?
*
* @param int|object $post_id Post ID or post object.
* @param string|array $args See description {@link wp_parse_args()}.
* @return null
*/
function wp_list_post_revisions( $post_id = 0, $args = null ) {
if ( !$post = get_post( $post_id ) )
return;
$defaults = array( 'parent' => false, 'right' => false, 'left' => false, 'format' => 'list', 'type' => 'all' );
extract( wp_parse_args( $args, $defaults ), EXTR_SKIP );
switch ( $type ) {
case 'autosave' :
if ( !$autosave = wp_get_post_autosave( $post->ID ) )
return;
$revisions = array( $autosave );
break;
case 'revision' : // just revisions - remove autosave later
case 'all' :
default :
if ( !$revisions = wp_get_post_revisions( $post->ID ) )
return;
break;
}
/* translators: post revision: 1: when, 2: author name */
$titlef = _x( '%1$s by %2$s', 'post revision' );
if ( $parent )
array_unshift( $revisions, $post );
$rows = $right_checked = '';
$class = false;
$can_edit_post = current_user_can( 'edit_post', $post->ID );
foreach ( $revisions as $revision ) {
if ( !current_user_can( 'read_post', $revision->ID ) )
continue;
if ( 'revision' === $type && wp_is_post_autosave( $revision ) )
continue;
$date = wp_post_revision_title( $revision );
$name = get_the_author_meta( 'display_name', $revision->post_author );
if ( 'form-table' == $format ) {
if ( $left )
$left_checked = $left == $revision->ID ? ' checked="checked"' : '';
else
$left_checked = $right_checked ? ' checked="checked"' : ''; // [sic] (the next one)
$right_checked = $right == $revision->ID ? ' checked="checked"' : '';
$class = $class ? '' : " class='alternate'";
if ( $post->ID != $revision->ID && $can_edit_post )
$actions = '<a href="' . wp_nonce_url( add_query_arg( array( 'revision' => $revision->ID, 'action' => 'restore' ) ), "restore-post_$post->ID|$revision->ID" ) . '">' . __( 'Restore' ) . '</a>';
else
$actions = '';
$rows .= "<tr$class>\n";
$rows .= "\t<th style='white-space: nowrap' scope='row'><input type='radio' name='left' value='$revision->ID'$left_checked /></th>\n";
$rows .= "\t<th style='white-space: nowrap' scope='row'><input type='radio' name='right' value='$revision->ID'$right_checked /></th>\n";
$rows .= "\t<td>$date</td>\n";
$rows .= "\t<td>$name</td>\n";
$rows .= "\t<td class='action-links'>$actions</td>\n";
$rows .= "</tr>\n";
} else {
$title = sprintf( $titlef, $date, $name );
$rows .= "\t<li>$title</li>\n";
}
}
if ( 'form-table' == $format ) : ?>
<form action="revision.php" method="get">
<div class="tablenav">
<div class="alignleft">
<input type="submit" class="button-secondary" value="<?php esc_attr_e( 'Compare Revisions' ); ?>" />
<input type="hidden" name="action" value="diff" />
<input type="hidden" name="post_type" value="<?php echo esc_attr($post->post_type); ?>" />
</div>
</div>
<br class="clear" />
<table class="widefat post-revisions" cellspacing="0" id="post-revisions">
<col />
<col />
<col style="width: 33%" />
<col style="width: 33%" />
<col style="width: 33%" />
<thead>
<tr>
<th scope="col"><?php /* translators: column name in revisions */ _ex( 'Old', 'revisions column name' ); ?></th>
<th scope="col"><?php /* translators: column name in revisions */ _ex( 'New', 'revisions column name' ); ?></th>
<th scope="col"><?php /* translators: column name in revisions */ _ex( 'Date Created', 'revisions column name' ); ?></th>
<th scope="col"><?php _e( 'Author' ); ?></th>
<th scope="col" class="action-links"><?php _e( 'Actions' ); ?></th>
</tr>
</thead>
<tbody>
<?php echo $rows; ?>
</tbody>
</table>
</form>
<?php
else :
echo "<ul class='post-revisions'>\n";
echo $rows;
echo "</ul>";
endif;
}
