Removed curly brace usage for string access

Author: dracony

src/PHPixie/Cache/Drivers/Type/File.php

@@ -83,7 +83,7 @@ protected function getItemWithoutCleanup($key)
     public function clear()
     {
         foreach (scandir($this->directory) as $file) {
-            if($file{0} == '.') {
+            if($file[0] == '.') {
                 continue;
             }
 
@@ -111,7 +111,7 @@ public function cleanup()
         $now = time();
 
         foreach (scandir($this->directory) as $file) {
-            if($file{0} == '.') {
+            if($file[0] == '.') {
                 continue;
             }
 
@@ -141,4 +141,4 @@ protected function checkFileExpiry($file, $time)
     abstract protected function getExpiryTimestamp($file);
     abstract protected function getFileData($file);
     abstract protected function buildFileContents($value, $timestamp);
-}
+}