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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 |
|---|---|
| 1519 | * |
| 1520 | * @since 2.7.0 |
| 1521 | * |
| 1522 | * @see wp_page_menu() |
| 1523 | * |
| 1524 | * @param string $menu The HTML output. |
| 1525 | * @param array $args An array of arguments. See wp_page_menu() |
| 1526 | * for information on accepted arguments. |
| 1527 | */ |
| 1528 | $menu = apply_filters( 'wp_page_menu', $menu, $args ); |
| 1529 | |
| 1530 | if ( $args['echo'] ) { |
| 1531 | echo $menu; |
| 1532 | } else { |
| 1533 | return $menu; |
| 1534 | } |
| 1535 | } |
| 1536 | |
| 1537 | // |