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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 |
|---|---|
| 1199 | $exclude_array = ( $r['exclude'] ) ? explode( ',', $r['exclude'] ) : array(); |
| 1200 | |
| 1201 | /** |
| 1202 | * Filters the array of pages to exclude from the pages list. |
| 1203 | * |
| 1204 | * @since 2.1.0 |
| 1205 | * |
| 1206 | * @param array $exclude_array An array of page IDs to exclude. |
| 1207 | */ |
| 1208 | $r['exclude'] = implode( ',', apply_filters( 'wp_list_pages_excludes', $exclude_array ) ); |
| 1209 | |
| 1210 | // Query pages. |
| 1211 | $r['hierarchical'] = 0; |
| 1212 | $pages = get_pages( $r ); |
| 1213 | |
| 1214 | if ( ! empty( $pages ) ) { |
| 1215 | if ( $r['title_li'] ) { |
| 1216 | $output .= '<li class="pagenav">' . $r['title_li'] . '<ul>'; |
| 1217 | } |