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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1123 | 'authors' => '' |
| 1124 | ); |
| 1125 | |
| 1126 | $r = wp_parse_args( $args, $defaults ); |
| 1127 | extract( $r, EXTR_SKIP ); |
| 1128 | |
| 1129 | $key = md5( serialize( $r ) ); |
| 1130 | if ( $cache = wp_cache_get( 'get_pages', 'page' ) ) |
| 1131 | if ( isset( $cache[ $key ] ) ) |
| 1132 | return apply_filters('get_pages', $cache[ $key ], $r ); |
| 1133 | |
| 1134 | $inclusions = ''; |
| 1135 | if ( !empty($include) ) { |
| 1136 | $child_of = 0; //ignore child_of, exclude, meta_key, and meta_value params if using include |
| 1137 | $exclude = ''; |
| 1138 | $meta_key = ''; |
| 1139 | $meta_value = ''; |
| 1140 | $incpages = preg_split('/[\s,]+/',$include); |
| 1141 | if ( count($incpages) ) { |
| Line | Code |
| 1206 | // Update cache. |
| 1207 | update_page_cache($pages); |
| 1208 | |
| 1209 | if ( $child_of || $hierarchical ) |
| 1210 | $pages = & get_page_children($child_of, $pages); |
| 1211 | |
| 1212 | $cache[ $key ] = $pages; |
| 1213 | wp_cache_set( 'get_pages', $cache, 'page' ); |
| 1214 | |
| 1215 | $pages = apply_filters('get_pages', $pages, $r); |
| 1216 | |
| 1217 | return $pages; |
| 1218 | } |
| 1219 | |
| 1220 | function generate_page_uri_index() { |
| 1221 | global $wpdb; |
| 1222 | |
| 1223 | //get pages in order of hierarchy, i.e. children after parents |
| 1224 | $posts = get_page_hierarchy($wpdb->get_results("SELECT ID, post_name, post_parent FROM $wpdb->posts WHERE post_type = 'page'")); |