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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 |
|---|---|
| 1744 | $show_screen = true; |
| 1745 | break; |
| 1746 | } |
| 1747 | if ( ! empty( $settings ) ) |
| 1748 | $show_screen = true; |
| 1749 | |
| 1750 | if ( !empty($wp_current_screen_options) ) |
| 1751 | $show_screen = true; |
| 1752 | |
| 1753 | $show_screen = apply_filters('screen_options_show_screen', $show_screen, $screen); |
| 1754 | |
| 1755 | ?> |
| 1756 | <div id="screen-meta"> |
| 1757 | <?php if ( $show_screen ) : ?> |
| 1758 | <div id="screen-options-wrap" class="hidden"> |
| 1759 | <form id="adv-settings" action="" method="post"> |
| 1760 | <?php if ( isset($wp_meta_boxes[$screen->id]) ) : ?> |
| 1761 | <h5><?php _ex('Show on screen', 'Metaboxes') ?></h5> |
| 1762 | <div class="metabox-prefs"> |