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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 |
|---|---|
| 3404 | } |
| 3405 | } |
| 3406 | |
| 3407 | function screen_meta($screen) { |
| 3408 | global $wp_meta_boxes, $_wp_contextual_help; |
| 3409 | |
| 3410 | $screen = str_replace('.php', '', $screen); |
| 3411 | $screen = str_replace('-new', '', $screen); |
| 3412 | $screen = str_replace('-add', '', $screen); |
| 3413 | $screen = apply_filters('screen_meta_screen', $screen); |
| 3414 | |
| 3415 | $column_screens = get_column_headers($screen); |
| 3416 | $meta_screens = array('index' => 'dashboard'); |
| 3417 | |
| 3418 | if ( isset($meta_screens[$screen]) ) |
| 3419 | $screen = $meta_screens[$screen]; |
| 3420 | $show_screen = false; |
| 3421 | $show_on_screen = false; |
| 3422 | if ( !empty($wp_meta_boxes[$screen]) || !empty($column_screens) ) { |