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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 |
|---|---|
| 3566 | * @since 2.8.0 |
| 3567 | * @since 5.8.0 The `$scheme` parameter was added. |
| 3568 | * |
| 3569 | * @param string $url The complete admin area URL including scheme and path. |
| 3570 | * @param string $path Path relative to the admin area URL. Blank string if no path is specified. |
| 3571 | * @param int|null $blog_id Site ID, or null for the current site. |
| 3572 | * @param string|null $scheme The scheme to use. Accepts 'http', 'https', |
| 3573 | * 'admin', or null. Default 'admin', which obeys force_ssl_admin() and is_ssl(). |
| 3574 | */ |
| 3575 | return apply_filters( 'admin_url', $url, $path, $blog_id, $scheme ); |
| 3576 | } |
| 3577 | |
| 3578 | /** |
| 3579 | * Retrieves the URL to the includes directory. |
| 3580 | * |
| 3581 | * @since 2.6.0 |
| 3582 | * |
| 3583 | * @param string $path Optional. Path relative to the includes URL. Default empty. |
| 3584 | * @param string|null $scheme Optional. Scheme to give the includes URL context. Accepts |