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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 |
|---|---|
| 1165 | $exclude_array = ( $r['exclude'] ) ? explode( ',', $r['exclude'] ) : array(); |
| 1166 | |
| 1167 | /** |
| 1168 | * Filters the array of pages to exclude from the pages list. |
| 1169 | * |
| 1170 | * @since 2.1.0 |
| 1171 | * |
| 1172 | * @param array $exclude_array An array of page IDs to exclude. |
| 1173 | */ |
| 1174 | $r['exclude'] = implode( ',', apply_filters( 'wp_list_pages_excludes', $exclude_array ) ); |
| 1175 | |
| 1176 | // Query pages. |
| 1177 | $r['hierarchical'] = 0; |
| 1178 | $pages = get_pages( $r ); |
| 1179 | |
| 1180 | if ( ! empty( $pages ) ) { |
| 1181 | if ( $r['title_li'] ) { |
| 1182 | $output .= '<li class="pagenav">' . $r['title_li'] . '<ul>'; |
| 1183 | } |