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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 |
|---|---|
| 65 | |
| 66 | /** |
| 67 | * Filters the default list of hidden columns. |
| 68 | * |
| 69 | * @since 4.4.0 |
| 70 | * |
| 71 | * @param array $hidden An array of columns hidden by default. |
| 72 | * @param WP_Screen $screen WP_Screen object of the current screen. |
| 73 | */ |
| 74 | $hidden = apply_filters( 'default_hidden_columns', $hidden, $screen ); |
| 75 | } |
| 76 | |
| 77 | /** |
| 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. |