Forward #3813

library/Zend/ServiceManager/ServiceManager.php

@@ -445,7 +445,7 @@ public function get($name, $usePeeringServiceManagers = true)
         }
 
         // Still no instance? raise an exception
-        if (!$instance && !is_array($instance)) {
+        if ($instance === null && !is_array($instance)) {
             if ($isAlias) {
                 throw new Exception\ServiceNotFoundException(sprintf(
                     'An alias "%s" was requested but no service could be found.',
@@ -494,11 +494,11 @@ public function create($name)
             $instance = $this->createFromFactory($cName, $rName);
         }
 
-        if (!$instance && isset($this->invokableClasses[$cName])) {
+        if ($instance === false && isset($this->invokableClasses[$cName])) {
             $instance = $this->createFromInvokable($cName, $rName);
         }
 
-        if (!$instance && $this->canCreateFromAbstractFactory($cName, $rName)) {
+        if ($instance === false && $this->canCreateFromAbstractFactory($cName, $rName)) {
             $instance = $this->createFromAbstractFactory($cName, $rName);
         }
 

tests/ZendTest/ServiceManager/ServiceManagerTest.php

@@ -560,6 +560,18 @@ public function testShouldRaiseExceptionIfInitializerClassIsNotAnInitializerInte
         $result = $this->serviceManager->addInitializer(get_class($this));
     }
 
+    public function testGetGlobIteratorServiceWorksProperly()
+    {
+        $config = new Config(array(
+            'invokables' => array(
+                'foo' => 'ZendTest\ServiceManager\TestAsset\GlobIteratorService',
+            ),
+        ));
+        $serviceManager = new ServiceManager($config);
+        $foo = $serviceManager->get('foo');
+        $this->assertInstanceOf('ZendTest\ServiceManager\TestAsset\GlobIteratorService', $foo);
+    }
+
     public function duplicateService()
     {
         $self = $this;

tests/ZendTest/ServiceManager/TestAsset/GlobIteratorService.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ * @package   Zend_ServiceManager
+ */
+
+namespace ZendTest\ServiceManager\TestAsset;
+
+class GlobIteratorService extends \GlobIterator
+{
+    public function __construct()
+    {
+    }
+}
+