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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 |
|---|---|
| 5002 | /** |
| 5003 | * Filters the available devices to allow previewing in the Customizer. |
| 5004 | * |
| 5005 | * @since 4.5.0 |
| 5006 | * |
| 5007 | * @see WP_Customize_Manager::get_previewable_devices() |
| 5008 | * |
| 5009 | * @param array $devices List of devices with labels and default setting. |
| 5010 | */ |
| 5011 | $devices = apply_filters( 'customize_previewable_devices', $devices ); |
| 5012 | |
| 5013 | return $devices; |
| 5014 | } |
| 5015 | |
| 5016 | /** |
| 5017 | * Register some default controls. |
| 5018 | * |
| 5019 | * @since 3.4.0 |
| 5020 | */ |