diff --git a/samples/client/petstore/php/Swagger.php b/samples/client/petstore/php/Swagger.php
index e314eeeec7f..102d2e918fb 100644
--- a/samples/client/petstore/php/Swagger.php
+++ b/samples/client/petstore/php/Swagger.php
@@ -11,7 +11,7 @@
  * @param string $className the class to attempt to load
  */
 function swagger_autoloader($className) {
-	$currentDir = substr(__FILE__, 0, strrpos(__FILE__, '/'));
+	$currentDir = dirname(__FILE__);
 	if (file_exists($currentDir . '/' . $className . '.php')) {
 		include $currentDir . '/' . $className . '.php';
 	} elseif (file_exists($currentDir . '/models/' . $className . '.php')) {
diff --git a/samples/client/wordnik-api/php/wordnik/Swagger.php b/samples/client/wordnik-api/php/wordnik/Swagger.php
index 3f86931c640..c8fd8e2feea 100644
--- a/samples/client/wordnik-api/php/wordnik/Swagger.php
+++ b/samples/client/wordnik-api/php/wordnik/Swagger.php
@@ -11,7 +11,7 @@
  * @param string $className the class to attempt to load
  */
 function swagger_autoloader($className) {
-	$currentDir = substr(__FILE__, 0, strrpos(__FILE__, '/'));
+	$currentDir = dirname(__FILE__);
 	if (file_exists($currentDir . '/' . $className . '.php')) {
 		include $currentDir . '/' . $className . '.php';
 	} elseif (file_exists($currentDir . '/models/' . $className . '.php')) {
diff --git a/src/main/resources/php/Swagger.mustache b/src/main/resources/php/Swagger.mustache
index 37da9c29f83..93f8e7144fa 100644
--- a/src/main/resources/php/Swagger.mustache
+++ b/src/main/resources/php/Swagger.mustache
@@ -11,7 +11,7 @@
  * @param string $className the class to attempt to load
  */
 function swagger_autoloader($className) {
-	$currentDir = substr(__FILE__, 0, strrpos(__FILE__, '/'));
+	$currentDir = dirname(__FILE__);
 	if (file_exists($currentDir . '/' . $className . '.php')) {
 		include $currentDir . '/' . $className . '.php';
 	} elseif (file_exists($currentDir . '/models/' . $className . '.php')) {