Fixed initial issue in #782

Author: Geolim4

lib/Phpfastcache/Core/Pool/IO/IOHelperTrait.php

@@ -290,16 +290,16 @@ protected function encodeFilename($keyword): string
      */
     protected function readFile($file): string
     {
+        if (!\is_readable($file)) {
+            throw new PhpfastcacheIOException("Cannot read file located at: {$file}");
+        }
         if (\function_exists('file_get_contents')) {
             return (string)\file_get_contents($file);
         }
 
         $string = '';
 
         $file_handle = @\fopen($file, 'rb');
-        if (!$file_handle) {
-            throw new PhpfastcacheIOException("Cannot read file located at: {$file}");
-        }
         while (!\feof($file_handle)) {
             $line = \fgets($file_handle);
             $string .= $line;

lib/Phpfastcache/Drivers/Files/Driver.php

@@ -20,7 +20,7 @@
 use FilesystemIterator;
 use Phpfastcache\Cluster\AggregatablePoolInterface;
 use Phpfastcache\Core\Pool\{DriverBaseTrait, ExtendedCacheItemPoolInterface, IO\IOHelperTrait};
-use Phpfastcache\Exceptions\{PhpfastcacheInvalidArgumentException};
+use Phpfastcache\Exceptions\{PhpfastcacheInvalidArgumentException, PhpfastcacheIOException};
 use Phpfastcache\Util\Directory;
 use Psr\Cache\CacheItemInterface;
 
@@ -74,16 +74,14 @@ protected function driverConnect(): bool
      */
     protected function driverRead(CacheItemInterface $item)
     {
-        /**
-         * Check for Cross-Driver type confusion
-         */
         $file_path = $this->getFilePath($item->getKey(), true);
-        if (!\file_exists($file_path)) {
+
+        try{
+            $content = $this->readFile($file_path);
+        }catch (PhpfastcacheIOException $e){
             return null;
         }
 
-        $content = $this->readFile($file_path);
-
         return $this->decode($content);
     }