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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 135 | wp_dashboard_trigger_widget_control( $_POST['widget_id'] ); |
| 136 | ob_end_clean(); |
| 137 | wp_redirect( remove_query_arg( 'edit' ) ); |
| 138 | exit; |
| 139 | } |
| 140 | |
| 141 | if ( $update ) |
| 142 | update_option( 'dashboard_widget_options', $widget_options ); |
| 143 | |
| 144 | do_action('do_meta_boxes', $screen->id, 'normal', ''); |
| 145 | do_action('do_meta_boxes', $screen->id, 'side', ''); |
| 146 | } |
| 147 | |
| 148 | function wp_add_dashboard_widget( $widget_id, $widget_name, $callback, $control_callback = null ) { |
| 149 | $screen = get_current_screen(); |
| 150 | global $wp_dashboard_control_callbacks; |
| 151 | |
| 152 | if ( $control_callback && current_user_can( 'edit_dashboard' ) && is_callable( $control_callback ) ) { |
| 153 | $wp_dashboard_control_callbacks[$widget_id] = $control_callback; |
| 154 | if ( isset( $_GET['edit'] ) && $widget_id == $_GET['edit'] ) { |