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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.
| Line | Code |
|---|---|
| 1270 | $exclude_array = ( $r['exclude'] ) ? explode( ',', $r['exclude'] ) : array(); |
| 1271 | |
| 1272 | /** |
| 1273 | * Filters the array of pages to exclude from the pages list. |
| 1274 | * |
| 1275 | * @since 2.1.0 |
| 1276 | * |
| 1277 | * @param array $exclude_array An array of page IDs to exclude. |
| 1278 | */ |
| 1279 | $r['exclude'] = implode( ',', apply_filters( 'wp_list_pages_excludes', $exclude_array ) ); |
| 1280 | |
| 1281 | // Query pages. |
| 1282 | $r['hierarchical'] = 0; |
| 1283 | $pages = get_pages( $r ); |
| 1284 | |
| 1285 | if ( ! empty( $pages ) ) { |
| 1286 | if ( $r['title_li'] ) { |
| 1287 | $output .= '<li class="pagenav">' . $r['title_li'] . '<ul>'; |
| 1288 | } |