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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 |
|---|---|
| 78 | * Filters the list of hidden columns. |
| 79 | * |
| 80 | * @since 4.4.0 |
| 81 | * @since 4.4.1 Added the `use_defaults` parameter. |
| 82 | * |
| 83 | * @param array $hidden An array of hidden columns. |
| 84 | * @param WP_Screen $screen WP_Screen object of the current screen. |
| 85 | * @param bool $use_defaults Whether to show the default columns. |
| 86 | */ |
| 87 | return apply_filters( 'hidden_columns', $hidden, $screen, $use_defaults ); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Prints the meta box preferences for screen meta. |
| 92 | * |
| 93 | * @since 2.7.0 |
| 94 | * |
| 95 | * @global array $wp_meta_boxes |
| 96 | * |