My first commit of codes

vendor/symfony/var-dumper/Symfony/Component/VarDumper/Caster/SplCaster.php

@@ -0,0 +1,110 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\VarDumper\Caster;
+
+use Symfony\Component\VarDumper\Cloner\Stub;
+
+/**
+ * Casts SPL related classes to array representation.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class SplCaster
+{
+    public static function castArrayObject(\ArrayObject $c, array $a, Stub $stub, $isNested)
+    {
+        $class = $stub->class;
+        $flags = $c->getFlags();
+
+        $b = array(
+            "\0~\0flag::STD_PROP_LIST" => (bool) ($flags & \ArrayObject::STD_PROP_LIST),
+            "\0~\0flag::ARRAY_AS_PROPS" => (bool) ($flags & \ArrayObject::ARRAY_AS_PROPS),
+            "\0~\0iteratorClass" => $c->getIteratorClass(),
+            "\0~\0storage" => $c->getArrayCopy(),
+        );
+
+        if ($class === 'ArrayObject') {
+            $a = $b;
+        } else {
+            if (!($flags & \ArrayObject::STD_PROP_LIST)) {
+                $c->setFlags(\ArrayObject::STD_PROP_LIST);
+
+                if ($a = (array) $c) {
+                    $class = new \ReflectionClass($class);
+                    foreach ($a as $k => $p) {
+                        if (!isset($k[0]) || ("\0" !== $k[0] && !$class->hasProperty($k))) {
+                            unset($a[$k]);
+                            $a["\0+\0".$k] = $p;
+                        }
+                    }
+                }
+
+                $c->setFlags($flags);
+            }
+
+            $a += $b;
+        }
+
+        return $a;
+    }
+
+    public static function castHeap(\Iterator $c, array $a, Stub $stub, $isNested)
+    {
+        $a += array(
+            "\0~\0heap" => iterator_to_array(clone $c),
+        );
+
+        return $a;
+    }
+
+    public static function castDoublyLinkedList(\SplDoublyLinkedList $c, array $a, Stub $stub, $isNested)
+    {
+        $mode = $c->getIteratorMode();
+        $c->setIteratorMode(\SplDoublyLinkedList::IT_MODE_KEEP | $mode & ~\SplDoublyLinkedList::IT_MODE_DELETE);
+
+        $a += array(
+            "\0~\0mode" => new ConstStub((($mode & \SplDoublyLinkedList::IT_MODE_LIFO) ? 'IT_MODE_LIFO' : 'IT_MODE_FIFO').' | '.(($mode & \SplDoublyLinkedList::IT_MODE_KEEP) ? 'IT_MODE_KEEP' : 'IT_MODE_DELETE'), $mode),
+            "\0~\0dllist" => iterator_to_array($c),
+        );
+        $c->setIteratorMode($mode);
+
+        return $a;
+    }
+
+    public static function castFixedArray(\SplFixedArray $c, array $a, Stub $stub, $isNested)
+    {
+        $a += array(
+            "\0~\0storage" => $c->toArray(),
+        );
+
+        return $a;
+    }
+
+    public static function castObjectStorage(\SplObjectStorage $c, array $a, Stub $stub, $isNested)
+    {
+        $storage = array();
+        unset($a["\0+\0\0gcdata"]); // Don't hit https://bugs.php.net/65967
+
+        foreach ($c as $obj) {
+            $storage[spl_object_hash($obj)] = array(
+                'object' => $obj,
+                'info' => $c->getInfo(),
+             );
+        }
+
+        $a += array(
+            "\0~\0storage" => $storage,
+        );
+
+        return $a;
+    }
+}