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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 |
|---|---|
| 3097 | /** |
| 3098 | * Filter the admin area URL. |
| 3099 | * |
| 3100 | * @since 2.8.0 |
| 3101 | * |
| 3102 | * @param string $url The complete admin area URL including scheme and path. |
| 3103 | * @param string $path Path relative to the admin area URL. Blank string if no path is specified. |
| 3104 | * @param int|null $blog_id Site ID, or null for the current site. |
| 3105 | */ |
| 3106 | return apply_filters( 'admin_url', $url, $path, $blog_id ); |
| 3107 | } |
| 3108 | |
| 3109 | /** |
| 3110 | * Retrieve the url to the includes directory. |
| 3111 | * |
| 3112 | * @since 2.6.0 |
| 3113 | * |
| 3114 | * @param string $path Optional. Path relative to the includes url. |
| 3115 | * @param string $scheme Optional. Scheme to give the includes url context. |