From 3fb85fb84ef4e7a05fa77e2465cdd07629584ab0 Mon Sep 17 00:00:00 2001
From: Damian Zajkowski <damian.zajkowski@gmail.com>
Date: Fri, 25 Mar 2016 15:54:15 +0100
Subject: [PATCH] Fixing VarDumper for throwing PHP Fatal when dumping
 __PHP_Incomplete_Class. #11196 issue.

---
 framework/CHANGELOG.md                    |  1 +
 framework/helpers/BaseVarDumper.php       |  4 ++--
 tests/framework/helpers/VarDumperTest.php | 17 +++++++++++++++++
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index 3833cb7d4f..fd21e651c7 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -4,6 +4,7 @@ Yii Framework 2 Change Log
 2.0.8 under development
 -----------------------
 
+- Bug #11196: Fixed VarDumper throws PHP Fatal when dumping __PHP_Incomplete_Class (DamianZ)
 - Bug #9851: Fixed partial commit / rollback in nested transactions (sammousa)
 - Bug #10784: Fixed `yii\grid\CheckboxColumn` to set correct value when `yii\grid\CheckboxColumn::$checkboxOptions` closure is used (nukkumatti)
 - Bug #10850: Fixed unable to use 'definitions' and 'aliases' at `yii\widgets\MaskedInput` (rahimov, klimov-paul)
diff --git a/framework/helpers/BaseVarDumper.php b/framework/helpers/BaseVarDumper.php
index 832372b2bd..ce4847d5e0 100644
--- a/framework/helpers/BaseVarDumper.php
+++ b/framework/helpers/BaseVarDumper.php
@@ -117,7 +117,7 @@ class BaseVarDumper
                     $className = get_class($var);
                     $spaces = str_repeat(' ', $level * 4);
                     self::$_output .= "$className#$id\n" . $spaces . '(';
-                    if (method_exists($var, '__debugInfo')) {
+                    if ('__PHP_Incomplete_Class' !== get_class($var) && method_exists($var, '__debugInfo')) {
                         $dumpValues = $var->__debugInfo();
                         if (!is_array($dumpValues)) {
                             throw new InvalidValueException('__debuginfo() must return an array');
@@ -208,7 +208,7 @@ class BaseVarDumper
                             }
                             self::exportInternal($varAsArray, $level);
                             return;
-                        } elseif (method_exists($var, '__toString')) {
+                        } elseif ('__PHP_Incomplete_Class' !== get_class($var) && method_exists($var, '__toString')) {
                             $output = var_export($var->__toString(), true);
                         } else {
                             $outputBackup = self::$_output;
diff --git a/tests/framework/helpers/VarDumperTest.php b/tests/framework/helpers/VarDumperTest.php
index 3461620297..cf559e503f 100644
--- a/tests/framework/helpers/VarDumperTest.php
+++ b/tests/framework/helpers/VarDumperTest.php
@@ -10,6 +10,23 @@ use yiiunit\TestCase;
  */
 class VarDumperTest extends TestCase
 {
+    public function testDumpIncompleteObject()
+    {
+        $serializedObj = 'O:16:"nonExistingClass":0:{}';
+        $incompleteObj = unserialize($serializedObj);
+        $dumpResult = VarDumper::dumpAsString($incompleteObj);
+        $this->assertContains("__PHP_Incomplete_Class#1\n(", $dumpResult);
+        $this->assertContains("nonExistingClass", $dumpResult);
+    }
+
+    public function testExportIncompleteObject()
+    {
+        $serializedObj = 'O:16:"nonExistingClass":0:{}';
+        $incompleteObj = unserialize($serializedObj);
+        $exportResult = VarDumper::export($incompleteObj);
+        $this->assertContains("nonExistingClass", $exportResult);
+    }
+    
     public function testDumpObject()
     {
         $obj = new \StdClass();