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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 3 times in this file.
Line | Code |
---|---|
2074 | 'authors' => '', 'parent' => -1, 'exclude_tree' => '' |
2075 | ); |
2076 |
|
2077 | $r = wp_parse_args( $args, $defaults ); |
2078 | extract( $r, EXTR_SKIP ); |
2079 |
|
2080 | $key = md5( serialize( compact(array_keys($defaults)) ) ); |
2081 | if ( $cache = wp_cache_get( 'get_pages', 'posts' ) ) { |
2082 | if ( isset( $cache[ $key ] ) ) { |
2083 | $pages = apply_filters('get_pages', $cache[ $key ], $r ); |
2084 | return $pages; |
2085 | } |
2086 | } |
2087 |
|
2088 | $inclusions = ''; |
2089 | if ( !empty($include) ) { |
2090 | $child_of = 0; //ignore child_of, parent, exclude, meta_key, and meta_value params if using include |
2091 | $parent = -1; |
2092 | $exclude = ''; |
Line | Code |
2166 | $where .= $wpdb->prepare(' AND post_parent = %d ', $parent); |
2167 |
|
2168 | $query = "SELECT * FROM $wpdb->posts $join WHERE (post_type = 'page' AND post_status = 'publish') $where "; |
2169 | $query .= $author_query; |
2170 | $query .= " ORDER BY " . $sort_column . " " . $sort_order ; |
2171 |
|
2172 | $pages = $wpdb->get_results($query); |
2173 |
|
2174 | if ( empty($pages) ) { |
2175 | $pages = apply_filters('get_pages', array(), $r); |
2176 | return $pages; |
2177 | } |
2178 |
|
2179 | // Update cache. |
2180 | update_page_cache($pages); |
2181 |
|
2182 | if ( $child_of || $hierarchical ) |
2183 | $pages = & get_page_children($child_of, $pages); |
2184 |
|
Line | Code |
2195 | for ( $i = 0; $i < $total; $i++ ) { |
2196 | if ( in_array($pages[$i]->ID, $excludes) ) |
2197 | unset($pages[$i]); |
2198 | } |
2199 | } |
2200 |
|
2201 | $cache[ $key ] = $pages; |
2202 | wp_cache_set( 'get_pages', $cache, 'posts' ); |
2203 |
|
2204 | $pages = apply_filters('get_pages', $pages, $r); |
2205 |
|
2206 | return $pages; |
2207 | } |
2208 |
|
2209 | // |
2210 | // Attachment functions |
2211 | // |
2212 |
|
2213 | /** |