symfony
diff --git a/‎src/Symfony/Component/VarDumper/Cloner/VarCloner.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/VarDumper/Cloner/VarCloner.php
+10-4Lines changed: 10 additions & 4 deletions b/‎src/Symfony/Component/VarDumper/Cloner/VarCloner.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/VarDumper/Cloner/VarCloner.php
+10-4Lines changed: 10 additions & 4 deletions
@@ -16,8 +16,13 @@
  */
 class VarCloner extends AbstractCloner
 {
+    private static $gid;
     private static $hashMask = 0;
     private static $hashOffset = 0;
+    private static $arrayCache = array(
+        Stub::ARRAY_ASSOC => array(),
+        Stub::ARRAY_INDEXED => array(),
+    );
 
     /**
      * {@inheritdoc}
@@ -36,14 +41,15 @@ protected function doClone($var)
         $maxItems = $this->maxItems;
         $maxString = $this->maxString;
         $cookie = (object) array();     // Unique object used to detect hard references
-        $gid = uniqid(mt_rand(), true); // Unique string used to detect the special $GLOBALS variable
         $a = null;                      // Array cast for nested structures
         $stub = null;                   // Stub capturing the main properties of an original item value
                                         // or null if the original value is used directly
 
         if (!self::$hashMask) {
+            self::$gid = uniqid(mt_rand(), true); // Unique string used to detect the special $GLOBALS variable
             self::initHashMask();
         }
+        $gid = self::$gid;
         $hashMask = self::$hashMask;
         $hashOffset = self::$hashOffset;
         $arrayStub = new Stub();
@@ -149,8 +155,6 @@ protected function doClone($var)
                         } else {
                             $indexedArrays[$len] = true;
                         }
-
-                        $stub->value = \count($a);
                         break;
 
                     case \is_object($v):
@@ -234,8 +238,10 @@ protected function doClone($var)
                         if ($arrayStub->cut) {
                             $stub = array($arrayStub->cut, $arrayStub->class => $arrayStub->position);
                             $arrayStub->cut = 0;
+                        } elseif (isset(self::$arrayCache[$arrayStub->class][$arrayStub->position])) {
+                            $stub = self::$arrayCache[$arrayStub->class][$arrayStub->position];
                         } else {
-                            $stub = array($arrayStub->class => $arrayStub->position);
+                            self::$arrayCache[$arrayStub->class][$arrayStub->position] = $stub = array($arrayStub->class => $arrayStub->position);
                         }
                     }