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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 |
|---|---|
| 1720 | * @param string $path Optional path relative to the admin url |
| 1721 | * @return string Admin url link with optional path appended |
| 1722 | */ |
| 1723 | function admin_url($path = '') { |
| 1724 | $url = site_url('wp-admin/', 'admin'); |
| 1725 | |
| 1726 | if ( !empty($path) && is_string($path) && strpos($path, '..') === false ) |
| 1727 | $url .= ltrim($path, '/'); |
| 1728 | |
| 1729 | return apply_filters('admin_url', $url, $path); |
| 1730 | } |
| 1731 | |
| 1732 | /** |
| 1733 | * Retrieve the url to the includes directory. |
| 1734 | * |
| 1735 | * @package WordPress |
| 1736 | * @since 2.6.0 |
| 1737 | * |
| 1738 | * @param string $path Optional. Path relative to the includes url. |