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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 |
|---|---|
| 1487 | * Filters the HTML output of a page-based menu. |
| 1488 | * |
| 1489 | * @since 2.7.0 |
| 1490 | * |
| 1491 | * @see wp_page_menu() |
| 1492 | * |
| 1493 | * @param string $menu The HTML output. |
| 1494 | * @param array $args An array of arguments. |
| 1495 | */ |
| 1496 | $menu = apply_filters( 'wp_page_menu', $menu, $args ); |
| 1497 | |
| 1498 | if ( $args['echo'] ) { |
| 1499 | echo $menu; |
| 1500 | } else { |
| 1501 | return $menu; |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | // |