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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 |
|---|---|
| 4646 | } |
| 4647 | |
| 4648 | /** |
| 4649 | * Filters the list of URLs allowed to be clicked and followed in the Customizer preview. |
| 4650 | * |
| 4651 | * @since 3.4.0 |
| 4652 | * |
| 4653 | * @param string[] $allowed_urls An array of allowed URLs. |
| 4654 | */ |
| 4655 | $allowed_urls = array_unique( apply_filters( 'customize_allowed_urls', $allowed_urls ) ); |
| 4656 | |
| 4657 | return $allowed_urls; |
| 4658 | } |
| 4659 | |
| 4660 | /** |
| 4661 | * Gets messenger channel. |
| 4662 | * |
| 4663 | * @since 4.7.0 |
| 4664 | * |