Preventive hotfix for #614

Author: Geolim4

src/phpFastCache/Core/Pool/IO/IOHelperTrait.php

@@ -153,8 +153,8 @@ protected function getFilePath($keyword, $skip = false)
          */
         if (!$skip) {
             if (!file_exists($path)) {
-                if (@!mkdir($path, $this->getDefaultChmod(), true)) {
-                    throw new phpFastCacheIOException('PLEASE CHMOD ' . $path . ' - ' . $this->getDefaultChmod() . ' OR ANY WRITABLE PERMISSION!');
+                if (@!mkdir($path, $this->getDefaultChmod(), true) && !is_dir($path)) {
+                    throw new phpFastCacheIOException('Path "' . $path . '" is not writable, please set a chmod 0777 or any writable permission and make sure to make use of an absolute path !');
                 }
             }
         }

src/phpFastCache/Drivers/Files/Driver.php

@@ -118,6 +118,7 @@ protected function driverDelete(CacheItemInterface $item)
         if ($item instanceof Item) {
             $file_path = $this->getFilePath($item->getKey(), true);
             if (file_exists($file_path) && @unlink($file_path)) {
+                clearstatcache(true, $file_path);
                 $dir = dirname($file_path);
                 if (!(new \FilesystemIterator($dir))->valid()) {
                     rmdir($dir);