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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 |
|---|---|
| 752 | 'email' => __('E-mail'), |
| 753 | 'role' => __('Role'), |
| 754 | 'posts' => __('Posts') |
| 755 | ); |
| 756 | break; |
| 757 | default : |
| 758 | $_wp_column_headers[$screen->id] = array(); |
| 759 | } |
| 760 | |
| 761 | $_wp_column_headers[$screen->id] = apply_filters('manage_' . $screen->id . '_columns', $_wp_column_headers[$screen->id]); |
| 762 | return $_wp_column_headers[$screen->id]; |
| 763 | } |
| 764 | |
| 765 | /** |
| 766 | * {@internal Missing Short Description}} |
| 767 | * |
| 768 | * @since unknown |
| 769 | * |
| 770 | * @param unknown_type $screen |