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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 |
|---|---|
| 2751 | /** |
| 2752 | * Filter the admin area URL. |
| 2753 | * |
| 2754 | * @since 2.8.0 |
| 2755 | * |
| 2756 | * @param string $url The complete admin area URL including scheme and path. |
| 2757 | * @param string $path Path relative to the admin area URL. Blank string if no path is specified. |
| 2758 | * @param int|null $blog_id Blog ID, or null for the current blog. |
| 2759 | */ |
| 2760 | return apply_filters( 'admin_url', $url, $path, $blog_id ); |
| 2761 | } |
| 2762 | |
| 2763 | /** |
| 2764 | * Retrieve the url to the includes directory. |
| 2765 | * |
| 2766 | * @since 2.6.0 |
| 2767 | * |
| 2768 | * @param string $path Optional. Path relative to the includes url. |
| 2769 | * @param string $scheme Optional. Scheme to give the includes url context. |