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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 |
|---|---|
| 52 | $posts_columns['modified'] = __('Submitted'); |
| 53 | else |
| 54 | $posts_columns['date'] = __('When'); |
| 55 | $posts_columns['title'] = __('Title'); |
| 56 | $posts_columns['categories'] = __('Categories'); |
| 57 | if ( !in_array($_GET['post_status'], array('pending', 'draft', 'future')) ) |
| 58 | $posts_columns['comments'] = '<div style="text-align: center">' . __('Comments') . '</div>'; |
| 59 | $posts_columns['author'] = __('Author'); |
| 60 | |
| 61 | $posts_columns = apply_filters('manage_posts_columns', $posts_columns); |
| 62 | |
| 63 | // you can not edit these at the moment |
| 64 | $posts_columns['control_view'] = ''; |
| 65 | $posts_columns['control_edit'] = ''; |
| 66 | $posts_columns['control_delete'] = ''; |
| 67 | |
| 68 | ?> |
| 69 | |
| 70 | <h2><?php |