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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 |
|---|---|
| 3636 | /** |
| 3637 | * Filters the admin URL for the current site or network depending on context. |
| 3638 | * |
| 3639 | * @since 4.9.0 |
| 3640 | * |
| 3641 | * @param string $url The complete URL including scheme and path. |
| 3642 | * @param string $path Path relative to the URL. Blank string if no path is specified. |
| 3643 | * @param string $scheme The scheme to use. |
| 3644 | */ |
| 3645 | return apply_filters( 'self_admin_url', $url, $path, $scheme ); |
| 3646 | } |
| 3647 | |
| 3648 | /** |
| 3649 | * Sets the scheme for a URL. |
| 3650 | * |
| 3651 | * @since 3.4.0 |
| 3652 | * @since 4.4.0 The 'rest' scheme was added. |
| 3653 | * |
| 3654 | * @param string $url Absolute URL that includes a scheme |