ReplaceArrayValue, UnsetArrayValue can be restored after `var_export()`

framework/CHANGELOG.md

@@ -22,6 +22,7 @@ Yii Framework 2 Change Log
 - Enh #13702: Added support for PSR-3 'Logger' (klimov-paul)
 - Enh #13706: 'Profiler' layer extracted (klimov-paul)
 - Enh #15410: Added serialization abstraction layer under `yii\serialize\*` namespace (klimov-paul)
+- Enh: Objects `yii\helpers\ReplaceArrayValue`, `yii\helpers\UnsetArrayValue` now support restoring after being exported with `var_export()` function (silverfire)
 - Chg: Removed methods marked as deprecated in 2.0.x (samdark)
 - Chg #14784: Signature of `yii\web\RequestParserInterface::parse()` changed to accept `yii\web\Request` instance as a sole argument (klimov-paul)
 - Chg #10771: Consistent behavior of `run()` method in all framework widgets. All return the result now for better extensibility (pkirill99, cebe)

framework/helpers/ReplaceArrayValue.php

@@ -61,7 +61,6 @@ class ReplaceArrayValue
      */
     public $value;
 
-
     /**
      * Constructor.
      * @param mixed $value value used as replacement.
@@ -70,4 +69,21 @@ class ReplaceArrayValue
     {
         $this->value = $value;
     }
+
+    /**
+     * Restores class state after using `var_export()`.
+     *
+     * @param array $state
+     * @return self
+     * @see var_export()
+     * @since 2.1.0
+     */
+    public static function __set_state($state)
+    {
+        if (!isset($state['value'])) {
+            throw new InvalidConfigException('Failed to instantiate class "ReplaceArrayValue". Required parameter "value" is missing');
+        }
+
+        return new self($state['value']);
+    }
 }

framework/helpers/UnsetArrayValue.php

@@ -49,4 +49,16 @@ namespace yii\helpers;
  */
 class UnsetArrayValue
 {
+    /**
+     * Restores class state after using `var_export()`.
+     *
+     * @param array $state
+     * @return self
+     * @see var_export()
+     * @since 2.1.0
+     */
+    public static function __set_state($state)
+    {
+        return new self();
+    }
 }