Merge branch 'hotfix/zendframework/zendframework#6785-remove-version-…

…checks-for-incompatible-versions' into develop

Close zendframework/zendframework#6785
Forward port zendframework/zendframework#6785

src/AutoloaderFactory.php

@@ -9,7 +9,6 @@
 
 namespace Zend\Loader;
 
-use ReflectionClass;
 use Traversable;
 
 if (class_exists('Zend\Loader\AutoloaderFactory')) {
@@ -87,7 +86,7 @@ public static function factory($options = null)
                     );
                 }
 
-                if (!static::isSubclassOf($class, 'Zend\Loader\SplAutoloader')) {
+                if (!is_subclass_of($class, 'Zend\Loader\SplAutoloader')) {
                     require_once 'Exception/InvalidArgumentException.php';
                     throw new Exception\InvalidArgumentException(
                         sprintf('Autoloader class %s must implement Zend\\Loader\\SplAutoloader', $class)
@@ -199,22 +198,14 @@ protected static function getStandardAutoloader()
      * @see https://bugs.php.net/bug.php?id=53727
      * @see https://github.com/zendframework/zf2/pull/1807
      *
+     * @deprecated since zf 2.3 requires PHP >= 5.3.23
+     *
      * @param  string $className
      * @param  string $type
      * @return bool
      */
     protected static function isSubclassOf($className, $type)
     {
-        if (is_subclass_of($className, $type)) {
-            return true;
-        }
-        if (PHP_VERSION_ID >= 50307) {
-            return false;
-        }
-        if (!interface_exists($type)) {
-            return false;
-        }
-        $r = new ReflectionClass($className);
-        return $r->implementsInterface($type);
+        return is_subclass_of($className, $type);
     }
 }