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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 |
|---|---|
| 5031 | /** |
| 5032 | * Filters the available devices to allow previewing in the Customizer. |
| 5033 | * |
| 5034 | * @since 4.5.0 |
| 5035 | * |
| 5036 | * @see WP_Customize_Manager::get_previewable_devices() |
| 5037 | * |
| 5038 | * @param array $devices List of devices with labels and default setting. |
| 5039 | */ |
| 5040 | $devices = apply_filters( 'customize_previewable_devices', $devices ); |
| 5041 | |
| 5042 | return $devices; |
| 5043 | } |
| 5044 | |
| 5045 | /** |
| 5046 | * Registers some default controls. |
| 5047 | * |
| 5048 | * @since 3.4.0 |
| 5049 | */ |