Merge pull request zendframework/zendframework#2877 branch 'hotfix/ou…

…tput-cache'

src/Pattern/OutputCache.php

@@ -85,7 +85,7 @@ public function end()
             throw new Exception\RuntimeException('Output cache not started');
         }
 
-        $output = ob_end_flush();
+        $output = ob_get_flush();
         if ($output === false) {
             throw new Exception\RuntimeException('Output buffering not active');
         }

test/Pattern/OutputCacheTest.php

@@ -79,6 +79,7 @@ public function testStartEndCacheMiss()
         $data = ob_get_clean();
 
         $this->assertEquals($output, $data);
+        $this->assertEquals($output, $this->_pattern->getOptions()->getStorage()->getItem($key));
     }
 
     public function testStartEndCacheHit()