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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 |
|---|---|
| 1307 | * containing the widget object. Fired on the back-end, $callback |
| 1308 | * is 'wp_widget_control', see $_callback. |
| 1309 | * @type array $params An associative array of multi-widget arguments. |
| 1310 | * @type string $classname CSS class applied to the widget container. |
| 1311 | * @type string $description The widget description. |
| 1312 | * @type array $_callback When the hook is fired on the back-end, $_callback is populated |
| 1313 | * with an array containing the widget object, see $callback. |
| 1314 | * } |
| 1315 | */ |
| 1316 | do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] ); |
| 1317 | |
| 1318 | if ( is_callable($callback) ) { |
| 1319 | call_user_func_array($callback, $params); |
| 1320 | $did_one = true; |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | /** |
| 1325 | * Fires after widgets are rendered in a dynamic sidebar. |