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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 |
|---|---|
| 1332 | * @since 1.5.1 |
| 1333 | * @since 4.4.0 `$pages` added as arguments. |
| 1334 | * |
| 1335 | * @see wp_list_pages() |
| 1336 | * |
| 1337 | * @param string $output HTML output of the pages list. |
| 1338 | * @param array $parsed_args An array of page-listing arguments. |
| 1339 | * @param WP_Post[] $pages Array of the page objects. |
| 1340 | */ |
| 1341 | $html = apply_filters( 'wp_list_pages', $output, $parsed_args, $pages ); |
| 1342 | |
| 1343 | if ( $parsed_args['echo'] ) { |
| 1344 | echo $html; |
| 1345 | } else { |
| 1346 | return $html; |
| 1347 | } |
| 1348 | } |
| 1349 | |
| 1350 | /** |