WordPressを読む 38-10 /blog/wp-includes/post.php 10
2014/12/25
目次
/blog/wp-includes/post.php 10
関数 trackback_url_list()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | /** * Do trackbacks for a list of URLs. * * @since 1.0.0 * * @param string $tb_list Comma separated list of URLs. * @param int $post_id Post ID. */ function trackback_url_list( $tb_list, $post_id ) { if ( ! empty( $tb_list ) ) { // Get post data. $postdata = get_post( $post_id, ARRAY_A ); // Form an excerpt. $excerpt = strip_tags( $postdata['post_excerpt'] ? $postdata['post_excerpt'] : $postdata['post_content'] ); if ( strlen( $excerpt ) > 255 ) { $excerpt = substr( $excerpt, 0, 252 ) . '…'; } $trackback_urls = explode( ',', $tb_list ); foreach( (array) $trackback_urls as $tb_url ) { $tb_url = trim( $tb_url ); trackback( $tb_url, wp_unslash( $postdata['post_title'] ), $excerpt, $post_id ); } } } |
関数 get_all_page_ids()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | // // Page functions // /** * Get a list of page IDs. * * @since 2.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @return array List of page IDs. */ function get_all_page_ids() { global $wpdb; $page_ids = wp_cache_get('all_page_ids', 'posts'); if ( ! is_array( $page_ids ) ) { $page_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE post_type = 'page'"); wp_cache_add('all_page_ids', $page_ids, 'posts'); } return $page_ids; } |
関数 get_page()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | /** * Retrieves page data given a page ID or page object. * * Use get_post() instead of get_page(). * * @since 1.5.1 * @deprecated 3.5.0 Use get_post() * * @param mixed $page Page object or page ID. Passed by reference. * @param string $output Optional. What to output. Accepts OBJECT, ARRAY_A, or ARRAY_N. * Default OBJECT. * @param string $filter Optional. How the return value should be filtered. Accepts 'raw', * 'edit', 'db', 'display'. Default 'raw'. * @return WP_Post|null WP_Post on success or null on failure. */ function get_page( $page, $output = OBJECT, $filter = 'raw') { return get_post( $page, $output, $filter ); } |
関数 get_page_by_path()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | /** * Retrieves a page given its path. * * @since 2.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $page_path Page path. * @param string $output Optional. Output type. Accepts OBJECT, ARRAY_N, or ARRAY_A. * Default OBJECT. * @param string|array $post_type Optional. Post type or array of post types. Default 'page'. * @return WP_Post|null WP_Post on success or null on failure. */ function get_page_by_path( $page_path, $output = OBJECT, $post_type = 'page' ) { global $wpdb; $page_path = rawurlencode(urldecode($page_path)); $page_path = str_replace('%2F', '/', $page_path); $page_path = str_replace('%20', ' ', $page_path); $parts = explode( '/', trim( $page_path, '/' ) ); $parts = esc_sql( $parts ); $parts = array_map( 'sanitize_title_for_query', $parts ); $in_string = "'" . implode( "','", $parts ) . "'"; if ( is_array( $post_type ) ) { $post_types = $post_type; } else { $post_types = array( $post_type, 'attachment' ); } $post_types = esc_sql( $post_types ); $post_type_in_string = "'" . implode( "','", $post_types ) . "'"; $sql = " SELECT ID, post_name, post_parent, post_type FROM $wpdb->posts WHERE post_name IN ($in_string) AND post_type IN ($post_type_in_string) "; $pages = $wpdb->get_results( $sql, OBJECT_K ); $revparts = array_reverse( $parts ); $foundid = 0; foreach ( (array) $pages as $page ) { if ( $page->post_name == $revparts[0] ) { $count = 0; $p = $page; while ( $p->post_parent != 0 && isset( $pages[ $p->post_parent ] ) ) { $count++; $parent = $pages[ $p->post_parent ]; if ( ! isset( $revparts[ $count ] ) || $parent->post_name != $revparts[ $count ] ) break; $p = $parent; } if ( $p->post_parent == 0 && $count+1 == count( $revparts ) && $p->post_name == $revparts[ $count ] ) { $foundid = $page->ID; if ( $page->post_type == $post_type ) break; } } } if ( $foundid ) return get_post( $foundid, $output ); return null; } |
関数 get_page_by_title()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | /** * Retrieve a page given its title. * * @since 2.1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $page_title Page title * @param string $output Optional. Output type. OBJECT, ARRAY_N, or ARRAY_A. * Default OBJECT. * @param string|array $post_type Optional. Post type or array of post types. Default 'page'. * @return WP_Post|null WP_Post on success or null on failure */ function get_page_by_title( $page_title, $output = OBJECT, $post_type = 'page' ) { global $wpdb; if ( is_array( $post_type ) ) { $post_type = esc_sql( $post_type ); $post_type_in_string = "'" . implode( "','", $post_type ) . "'"; $sql = $wpdb->prepare( " SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type IN ($post_type_in_string) ", $page_title ); } else { $sql = $wpdb->prepare( " SELECT ID FROM $wpdb->posts WHERE post_title = %s AND post_type = %s ", $page_title, $post_type ); } $page = $wpdb->get_var( $sql ); if ( $page ) return get_post( $page, $output ); return null; } |
関数 get_page_children()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | /** * Retrieve child pages from list of pages matching page ID. * * Matches against the pages parameter against the page ID. Also matches all * children for the same to retrieve all children of a page. Does not make any * SQL queries to get the children. * * @since 1.5.1 * * @param int $page_id Page ID. * @param array $pages List of pages' objects. * @return array List of page children. */ function get_page_children($page_id, $pages) { $page_list = array(); foreach ( (array) $pages as $page ) { if ( $page->post_parent == $page_id ) { $page_list[] = $page; if ( $children = get_page_children($page->ID, $pages) ) $page_list = array_merge($page_list, $children); } } return $page_list; } |
関数 get_page_hierarchy()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | /** * Order the pages with children under parents in a flat list. * * It uses auxiliary structure to hold parent-children relationships and * runs in O(N) complexity * * @since 2.0.0 * * @param array $pages Posts array, passed by reference. * @param int $page_id Optional. Parent page ID. Default 0. * @return array A list arranged by hierarchy. Children immediately follow their parents. */ function get_page_hierarchy( &$pages, $page_id = 0 ) { if ( empty( $pages ) ) { $result = array(); return $result; } $children = array(); foreach ( (array) $pages as $p ) { $parent_id = intval( $p->post_parent ); $children[ $parent_id ][] = $p; } $result = array(); _page_traverse_name( $page_id, $children, $result ); return $result; } |
関数 _page_traverse_name()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | /** * Traverse and return all the nested children post names of a root page. * * $children contains parent-children relations * * @since 2.9.0 * * @see _page_traverse_name() * * @param int $page_id Page ID. * @param array &$children Parent-children relations, passed by reference. * @param array &$result Result, passed by reference. */ function _page_traverse_name( $page_id, &$children, &$result ){ if ( isset( $children[ $page_id ] ) ){ foreach( (array)$children[ $page_id ] as $child ) { $result[ $child->ID ] = $child->post_name; _page_traverse_name( $child->ID, $children, $result ); } } } |
関数 get_page_uri()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | /** * Build URI for a page. * * Sub pages will be in the "directory" under the parent page post name. * * @since 1.5.0 * * @param WP_Post|object|int $page Page object or page ID. * @return string|false Page URI, false on error. */ function get_page_uri( $page ) { $page = get_post( $page ); if ( ! $page ) return false; $uri = $page->post_name; foreach ( $page->ancestors as $parent ) { $uri = get_post( $parent )->post_name . '/' . $uri; } return $uri; } |
関数 get_pages()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 | /** * Retrieve a list of pages. * * @global wpdb $wpdb WordPress database abstraction object. * * @since 1.5.0 * * @param mixed $args { * Array or string of arguments. Optional. * * @type int 'child_of' Page ID to return child and grandchild pages of. Default 0, or no restriction. * @type string 'sort_order' How to sort retrieved pages. * Default 'ASC'. Accepts 'ASC', 'DESC'. * @type string 'sort_column' What columns to sort pages by, comma-separated. * Default 'post_title'. Accepts 'post_author', 'post_date', 'post_title', 'post_name', * 'post_modified', 'post_modified_gmt', 'menu_order', 'post_parent', 'ID', 'rand', * 'comment_count'. 'post_' can be omitted for any values that start with it. * @type bool 'hierarchical' Whether to return pages hierarchically. Default true. * @type array 'exclude' Array of page IDs to exclude. * @type array 'include' Array of page IDs to include. Cannot be used with 'child_of', 'parent', 'exclude', * 'meta_key', 'meta_value', or 'hierarchical'. * @type string 'meta_key' Only include pages with this meta key. * @type string 'meta_value' Only include pages with this meta value. * @type string 'authors' A comma-separated list of author IDs. * @type int 'parent' Page ID to return direct children of. 'hierarchical' must be false. * Default -1, or no restriction. * @type int 'exclude_tree' Remove all children of the given ID from returned pages. * @type int 'number' The number of pages to return. Default 0, or all pages. * @type int 'offset' The number of pages to skip before returning. Requires 'number'. * Default 0. * @type string 'post_type' The post type to query. * Default 'page'. * @type string 'post_status' A comma-separated list of post status types to include. * Default 'publish'. * } * @return array List of pages matching defaults or $args. */ function get_pages( $args = array() ) { global $wpdb; $defaults = array( 'child_of' => 0, 'sort_order' => 'ASC', 'sort_column' => 'post_title', 'hierarchical' => 1, 'exclude' => array(), 'include' => array(), 'meta_key' => '', 'meta_value' => '', 'authors' => '', 'parent' => -1, 'exclude_tree' => array(), 'number' => '', 'offset' => 0, 'post_type' => 'page', 'post_status' => 'publish', ); $r = wp_parse_args( $args, $defaults ); $number = (int) $r['number']; $offset = (int) $r['offset']; $child_of = (int) $r['child_of']; $hierarchical = $r['hierarchical']; $exclude = $r['exclude']; $meta_key = $r['meta_key']; $meta_value = $r['meta_value']; $parent = $r['parent']; $post_status = $r['post_status']; // Make sure the post type is hierarchical. $hierarchical_post_types = get_post_types( array( 'hierarchical' => true ) ); if ( ! in_array( $r['post_type'], $hierarchical_post_types ) ) { return false; } if ( $parent > 0 && ! $child_of ) { $hierarchical = false; } // Make sure we have a valid post status. if ( ! is_array( $post_status ) ) { $post_status = explode( ',', $post_status ); } if ( array_diff( $post_status, get_post_stati() ) ) { return false; } // $args can be whatever, only use the args defined in defaults to compute the key. $key = md5( serialize( wp_array_slice_assoc( $r, array_keys( $defaults ) ) ) ); $last_changed = wp_cache_get( 'last_changed', 'posts' ); if ( ! $last_changed ) { $last_changed = microtime(); wp_cache_set( 'last_changed', $last_changed, 'posts' ); } $cache_key = "get_pages:$key:$last_changed"; if ( $cache = wp_cache_get( $cache_key, 'posts' ) ) { // Convert to WP_Post instances. $pages = array_map( 'get_post', $cache ); /** This filter is documented in wp-includes/post.php */ $pages = apply_filters( 'get_pages', $pages, $r ); return $pages; } $inclusions = ''; if ( ! empty( $r['include'] ) ) { $child_of = 0; //ignore child_of, parent, exclude, meta_key, and meta_value params if using include $parent = -1; $exclude = ''; $meta_key = ''; $meta_value = ''; $hierarchical = false; $incpages = wp_parse_id_list( $r['include'] ); if ( ! empty( $incpages ) ) { $inclusions = ' AND ID IN (' . implode( ',', $incpages ) . ')'; } } $exclusions = ''; if ( ! empty( $exclude ) ) { $expages = wp_parse_id_list( $exclude ); if ( ! empty( $expages ) ) { $exclusions = ' AND ID NOT IN (' . implode( ',', $expages ) . ')'; } } $author_query = ''; if ( ! empty( $r['authors'] ) ) { $post_authors = preg_split( '/[\s,]+/', $r['authors'] ); if ( ! empty( $post_authors ) ) { foreach ( $post_authors as $post_author ) { //Do we have an author id or an author login? if ( 0 == intval($post_author) ) { $post_author = get_user_by('login', $post_author); if ( empty( $post_author ) ) { continue; } if ( empty( $post_author->ID ) ) { continue; } $post_author = $post_author->ID; } if ( '' == $author_query ) { $author_query = $wpdb->prepare(' post_author = %d ', $post_author); } else { $author_query .= $wpdb->prepare(' OR post_author = %d ', $post_author); } } if ( '' != $author_query ) { $author_query = " AND ($author_query)"; } } } $join = ''; $where = "$exclusions $inclusions "; if ( '' !== $meta_key || '' !== $meta_value ) { $join = " LEFT JOIN $wpdb->postmeta ON ( $wpdb->posts.ID = $wpdb->postmeta.post_id )"; // meta_key and meta_value might be slashed $meta_key = wp_unslash($meta_key); $meta_value = wp_unslash($meta_value); if ( '' !== $meta_key ) { $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_key = %s", $meta_key); } if ( '' !== $meta_value ) { $where .= $wpdb->prepare(" AND $wpdb->postmeta.meta_value = %s", $meta_value); } } if ( is_array( $parent ) ) { $post_parent__in = implode( ',', array_map( 'absint', (array) $parent ) ); if ( ! empty( $post_parent__in ) ) { $where .= " AND post_parent IN ($post_parent__in)"; } } elseif ( $parent >= 0 ) { $where .= $wpdb->prepare(' AND post_parent = %d ', $parent); } if ( 1 == count( $post_status ) ) { $where_post_type = $wpdb->prepare( "post_type = %s AND post_status = %s", $r['post_type'], array_shift( $post_status ) ); } else { $post_status = implode( "', '", $post_status ); $where_post_type = $wpdb->prepare( "post_type = %s AND post_status IN ('$post_status')", $r['post_type'] ); } $orderby_array = array(); $allowed_keys = array( 'author', 'post_author', 'date', 'post_date', 'title', 'post_title', 'name', 'post_name', 'modified', 'post_modified', 'modified_gmt', 'post_modified_gmt', 'menu_order', 'parent', 'post_parent', 'ID', 'rand', 'comment_count' ); foreach ( explode( ',', $r['sort_column'] ) as $orderby ) { $orderby = trim( $orderby ); if ( ! in_array( $orderby, $allowed_keys ) ) { continue; } switch ( $orderby ) { case 'menu_order': break; case 'ID': $orderby = "$wpdb->posts.ID"; break; case 'rand': $orderby = 'RAND()'; break; case 'comment_count': $orderby = "$wpdb->posts.comment_count"; break; default: if ( 0 === strpos( $orderby, 'post_' ) ) { $orderby = "$wpdb->posts." . $orderby; } else { $orderby = "$wpdb->posts.post_" . $orderby; } } $orderby_array[] = $orderby; } $sort_column = ! empty( $orderby_array ) ? implode( ',', $orderby_array ) : "$wpdb->posts.post_title"; $sort_order = strtoupper( $r['sort_order'] ); if ( '' !== $sort_order && ! in_array( $sort_order, array( 'ASC', 'DESC' ) ) ) { $sort_order = 'ASC'; } $query = "SELECT * FROM $wpdb->posts $join WHERE ($where_post_type) $where "; $query .= $author_query; $query .= " ORDER BY " . $sort_column . " " . $sort_order ; if ( ! empty( $number ) ) { $query .= ' LIMIT ' . $offset . ',' . $number; } $pages = $wpdb->get_results($query); if ( empty($pages) ) { /** This filter is documented in wp-includes/post.php */ $pages = apply_filters( 'get_pages', array(), $r ); return $pages; } // Sanitize before caching so it'll only get done once. $num_pages = count($pages); for ($i = 0; $i < $num_pages; $i++) { $pages[$i] = sanitize_post($pages[$i], 'raw'); } // Update cache. update_post_cache( $pages ); if ( $child_of || $hierarchical ) { $pages = get_page_children($child_of, $pages); } if ( ! empty( $r['exclude_tree'] ) ) { $exclude = wp_parse_id_list( $r['exclude_tree'] ); foreach( $exclude as $id ) { $children = get_page_children( $id, $pages ); foreach ( $children as $child ) { $exclude[] = $child->ID; } } $num_pages = count( $pages ); for ( $i = 0; $i < $num_pages; $i++ ) { if ( in_array( $pages[$i]->ID, $exclude ) ) { unset( $pages[$i] ); } } } $page_structure = array(); foreach ( $pages as $page ) { $page_structure[] = $page->ID; } wp_cache_set( $cache_key, $page_structure, 'posts' ); // Convert to WP_Post instances. $pages = array_map( 'get_post', $pages ); /** * Filter the retrieved list of pages. * * @since 2.1.0 * * @param array $pages List of pages to retrieve. * @param array $r Array of get_pages() arguments. */ $pages = apply_filters( 'get_pages', $pages, $r ); return $pages; } |