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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 |
|---|---|
| 3398 | /** |
| 3399 | * Filters the admin area URL. |
| 3400 | * |
| 3401 | * @since 2.8.0 |
| 3402 | * |
| 3403 | * @param string $url The complete admin area URL including scheme and path. |
| 3404 | * @param string $path Path relative to the admin area URL. Blank string if no path is specified. |
| 3405 | * @param int|null $blog_id Site ID, or null for the current site. |
| 3406 | */ |
| 3407 | return apply_filters( 'admin_url', $url, $path, $blog_id ); |
| 3408 | } |
| 3409 | |
| 3410 | /** |
| 3411 | * Retrieves the URL to the includes directory. |
| 3412 | * |
| 3413 | * @since 2.6.0 |
| 3414 | * |
| 3415 | * @param string $path Optional. Path relative to the includes URL. Default empty. |
| 3416 | * @param string|null $scheme Optional. Scheme to give the includes URL context. Accepts |