de the `` 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 = '' ) { global $page, $numpages, $multipage, $more; $defaults = array( 'before' => '

' . __( 'Pages:' ), 'after' => '

', 'link_before' => '', 'link_after' => '', 'next_or_number' => 'number', 'separator' => ' ', 'nextpagelink' => __( 'Next page' ), 'previouspagelink' => __( 'Previous page' ), 'pagelink' => '%', 'echo' => 1 ); $params = wp_parse_args( $args, $defaults ); /** * Filters 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 ); $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 . '
'; } /** * Filters the HTML output of individual page number links. * * @since 3.6.0 * * @param string $link The page number HTML output. * @param int $i Page number for paginated posts' page links. */ $link = apply_filters( 'wp_link_pages_link', $link, $i ); // Use the custom links separator beginning with the second link. $output .= ( 1 === $i ) ? ' ' : $r['separator']; $output .= $link; } $output .= $r['after']; } elseif ( $more ) { $output .= $r['before']; $prev = $page - 1; if ( $prev > 0 ) { $link = _wp_link_page( $prev ) . $r['link_before'] . $r['previouspagelink'] . $r['link_after'] . ''; /** This filter is documented in wp-includes/post-template.php */ $output .= apply_filters( 'wp_link_pages_link', $link, $prev ); } $next = $page + 1; if ( $next <= $numpages ) { if ( $prev ) { $output .= $r['separator']; } $link = _wp_link_page( $next ) . $r['link_before'] . $r['nextpagelink'] . $r['link_after'] . ''; /** This filter is documented in wp-includes/post-template.php */ $output .= apply_filters( 'wp_link_pages_link', $link, $next ); } $output .= $r['after']; } } /** * Filters the HTML output of page links for paginated posts. * * @since 3.6.0 * * @param string $output HTML output of paginated posts' page links. * @param array $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 * * @global WP_Rewrite $wp_rewrite * * @param int $i Page number. * @return string Link. */ function _wp_link_page( $i ) { global $wp_rewrite; $post = get_post(); $query_args = array(); if ( 1 == $i ) { $url = get_permalink(); } else { if ( '' == get_option('permalink_structure') || in_array($post->post_status, array('draft', 'pending')) ) $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() ) { if ( ( 'draft' !== $post->post_status ) && isset( $_GET['preview_id'], $_GET['preview_nonce'] ) ) { $query_args['preview_id'] = wp_unslash( $_GET['preview_id'] ); $query_args['preview_nonce'] = wp_unslash( $_GET['preview_nonce'] ); } $url = get_preview_post_link( $post, $query_args, $url ); } return ''; } // // Post-meta: Custom per-post fields. // /** * Retrieve post custom meta data field. * * @since 1.5.0 * * @param string $key Meta data key name. * @return false|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. * * @since 1.2.0 * * @internal This will probably change at some point... * */ function the_meta() { if ( $keys = get_post_custom_keys() ) { echo "\n"; } } // // Pages // /** * Retrieve or display list of pages as a dropdown (select list). * * @since 2.1.0 * @since 4.2.0 The `$value_field` argument was added. * @since 4.3.0 The `$class` argument was added. * * @param array|string $args { * Optional. Array or string of arguments to generate a pages drop-down element. * * @type int $depth Maximum depth. Default 0. * @type int $child_of Page ID to retrieve child pages of. Default 0. * @type int|string $selected Value of the option that should be selected. Default 0. * @type bool|int $echo Whether to echo or return the generated markup. Accepts 0, 1, * or their bool equivalents. Default 1. * @type string $name Value for the 'name' attribute of the select element. * Default 'page_id'. * @type string $id Value for the 'id' attribute of the select element. * @type string $class Value for the 'class' attribute of the select element. Default: none. * Defaults to the value of `$name`. * @type string $show_option_none Text to display for showing no pages. Default empty (does not display). * @type string $show_option_no_change Text to display for "no change" option. Default empty (does not display). * @type string $option_none_value Value to use when no page is selected. Default empty. * @type string $value_field Post field used to populate the 'value' attribute of the option * elements. Accepts any valid post field. Default 'ID'. * } * @return string HTML content, if not displaying. */ function wp_dropdown_pages( $args = '' ) { $defaults = array( 'depth' => 0, 'child_of' => 0, 'selected' => 0, 'echo' => 1, 'name' => 'page_id', 'id' => '', 'class' => '', 'show_option_none' => '', 'show_option_no_change' => '', 'option_none_value' => '', 'value_field' => 'ID', ); $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 ) ) { $class = ''; if ( ! empty( $r['class'] ) ) { $class = " class='" . esc_attr( $r['class'] ) . "'"; } $output = "\n"; } /** * Filters the HTML output of a list of pages as a drop down. * * @since 2.1.0 * @since 4.4.0 `$r` and `$pages` added as arguments. * * @param string $output HTML output for drop down list of pages. * @param array $r The parsed arguments array. * @param array $pages List of WP_Post objects returned by `get_pages()` */ $html = apply_filters( 'wp_dropdown_pages', $output, $r, $pages ); if ( $r['echo'] ) { echo $html; } return $html; } /** * Retrieve or display list of pages (or hierarchical post type items) in list (li) format. * * @since 1.5.0 * @since 4.7.0 Added the `item_spacing` argument. * * @see get_pages() * * @global WP_Query $wp_query * * @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|array $post_status Comma-separated list or array of post statuses to include. Default 'publish'. * @type string $show_date Whether to display the page publish or modified date for each page. Accepts * 'modified' or any other value. An empty value hides the date. Default empty. * @type string $sort_column Comma-separated list of column names to sort the pages by. Accepts 'post_author', * 'post_date', 'post_title', 'post_name', 'post_modified', 'post_modified_gmt', * 'menu_order', 'post_parent', 'ID', 'rand', or 'comment_count'. Default 'post_title'. * @type string $title_li List heading. Passing a null or empty value will result in no heading, and the list * will not be wrapped with unordered list `