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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 |
|---|---|
| 291 | else |
| 292 | $posts_columns['date'] = __('Date'); |
| 293 | $posts_columns['title'] = __('Title'); |
| 294 | $posts_columns['author'] = __('Author'); |
| 295 | $posts_columns['categories'] = __('Categories'); |
| 296 | $posts_columns['tags'] = __('Tags'); |
| 297 | if ( !in_array($_GET['post_status'], array('pending', 'draft', 'future')) ) |
| 298 | $posts_columns['comments'] = '<div class="vers"><img alt="Comments" src="images/comment-grey-bubble.png" /></div>'; |
| 299 | $posts_columns['status'] = __('Status'); |
| 300 | $posts_columns = apply_filters('manage_posts_columns', $posts_columns); |
| 301 | |
| 302 | return $posts_columns; |
| 303 | } |
| 304 | |
| 305 | // define the columns to display, the syntax is 'internal name' => 'display name' |
| 306 | function wp_manage_media_columns() { |
| 307 | $posts_columns = array(); |
| 308 | $posts_columns['cb'] = '<input type="checkbox" onclick="checkAll(document.getElementById(\'posts-filter\'));" />'; |
| 309 | $posts_columns['icon'] = ''; |