chore: improved PHP 8 support

Author: winternet-studio

FormHelper.php

@@ -260,10 +260,11 @@ public static function WarnLeavingUnsaved($view, $activeForm) {
 	 * @param string $userTimeZone : Time zone of the end-user
 	 * @param array $model : Model to convert timestamp attributes for (can just be an empty model)
 	 * @param string $options : Available options:
-	 *   - `format` (string)
-	 *   - `modifyModel` (boolean)
+	 *   - `format` (string) : how to format date using (as per date()). Default: `Y-m-d H:i:s`
+	 *   - `modifyModel` (boolean) : default is false
 	 *   - `multipleModels` (boolean) : set true to assume that the POST contains multiple of the given model,
 	 *        ie. that the form of the fields are `$_POST[modelName][index][attribute]` instead of just the normal `$_POST[modelName][attribute]`
+	 *        Default false.
 	 *   - `customPostData` (array) : inject POST values manually if $_POST is not to be used.
 	 *        Then the modified values are returned instead and they are not written back into neither $_POST nor Yii's request body params.
 	 *

ManageBehavior.php

@@ -44,7 +44,7 @@ public function resumeAllBehaviors() {
 		- nothing
 		*/
 		foreach ($this->model->behaviors() as $key => $behav) {
-			if ($this->suspendedBehaviors[$behav['class']]) {
+			if (@$this->suspendedBehaviors[$behav['class']]) {
 				$this->model->attachBehavior($key, $this->suspendedBehaviors[$behav['class']]);
 				unset($this->suspendedBehaviors[$behav['class']]);
 			}