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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 |
|---|---|
| 130 | ); |
| 131 | |
| 132 | $r = wp_parse_args( $args, $defaults ); |
| 133 | extract( $r, EXTR_SKIP ); |
| 134 | |
| 135 | $cache = array(); |
| 136 | $key = md5( serialize( $r ) ); |
| 137 | if ( $cache = wp_cache_get( 'get_bookmarks', 'bookmark' ) ) { |
| 138 | if ( is_array($cache) && isset( $cache[ $key ] ) ) |
| 139 | return apply_filters('get_bookmarks', $cache[ $key ], $r ); |
| 140 | } |
| 141 | |
| 142 | if ( !is_array($cache) ) |
| 143 | $cache = array(); |
| 144 | |
| 145 | $inclusions = ''; |
| 146 | if ( !empty($include) ) { |
| 147 | $exclude = ''; //ignore exclude, category, and category_name params if using include |
| 148 | $category = ''; |
| Line | Code |
| 175 | if (!empty($exclusions)) |
| 176 | $exclusions .= ')'; |
| 177 | |
| 178 | if ( !empty($category_name) ) { |
| 179 | if ( $category = get_term_by('name', $category_name, 'link_category') ) { |
| 180 | $category = $category->term_id; |
| 181 | } else { |
| 182 | $cache[ $key ] = array(); |
| 183 | wp_cache_set( 'get_bookmarks', $cache, 'bookmark' ); |
| 184 | return apply_filters( 'get_bookmarks', array(), $r ); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | if ( ! empty($search) ) { |
| 189 | $search = esc_sql( like_escape( $search ) ); |
| 190 | $search = " AND ( (link_url LIKE '%$search%') OR (link_name LIKE '%$search%') OR (link_description LIKE '%$search%') ) "; |
| 191 | } |
| 192 | |
| 193 | $category_query = ''; |
| Line | Code |
| 257 | $query .= " ORDER BY $orderby $order"; |
| 258 | if ($limit != -1) |
| 259 | $query .= " LIMIT $limit"; |
| 260 | |
| 261 | $results = $wpdb->get_results($query); |
| 262 | |
| 263 | $cache[ $key ] = $results; |
| 264 | wp_cache_set( 'get_bookmarks', $cache, 'bookmark' ); |
| 265 | |
| 266 | return apply_filters('get_bookmarks', $results, $r); |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Sanitizes all bookmark fields |
| 271 | * |
| 272 | * @since 2.3.0 |
| 273 | * |
| 274 | * @param object|array $bookmark Bookmark row |
| 275 | * @param string $context Optional, default is 'display'. How to filter the |