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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 |
|---|---|
| 1770 | * @param string $path Optional path relative to the admin url |
| 1771 | * @return string Admin url link with optional path appended |
| 1772 | */ |
| 1773 | function admin_url($path = '') { |
| 1774 | $url = site_url('wp-admin/', 'admin'); |
| 1775 | |
| 1776 | if ( !empty($path) && is_string($path) && strpos($path, '..') === false ) |
| 1777 | $url .= ltrim($path, '/'); |
| 1778 | |
| 1779 | return apply_filters('admin_url', $url, $path); |
| 1780 | } |
| 1781 | |
| 1782 | /** |
| 1783 | * Retrieve the url to the includes directory. |
| 1784 | * |
| 1785 | * @package WordPress |
| 1786 | * @since 2.6.0 |
| 1787 | * |
| 1788 | * @param string $path Optional. Path relative to the includes url. |