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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 |
---|---|
2858 | /** |
2859 | * Filter the admin area URL. |
2860 | * |
2861 | * @since 2.8.0 |
2862 | * |
2863 | * @param string $url The complete admin area URL including scheme and path. |
2864 | * @param string $path Path relative to the admin area URL. Blank string if no path is specified. |
2865 | * @param int|null $blog_id Blog ID, or null for the current blog. |
2866 | */ |
2867 | return apply_filters( 'admin_url', $url, $path, $blog_id ); |
2868 | } |
2869 |
|
2870 | /** |
2871 | * Retrieve the url to the includes directory. |
2872 | * |
2873 | * @since 2.6.0 |
2874 | * |
2875 | * @param string $path Optional. Path relative to the includes url. |
2876 | * @param string $scheme Optional. Scheme to give the includes url context. |