When the second argument is a resource, use fwrite() to transfer the content

Author: bunyamin-gc

lib/internal/Magento/Framework/Filesystem/Io/File.php

@@ -441,10 +441,13 @@ public function cd($dir)
     public function read($filename, $dest = null)
     {
         $this->_cwd();
-        if ($dest !== null) {
-            $result = @copy($filename, $dest);
-        } else {
+        if ($dest === null) {
             $result = @file_get_contents($filename);
+        } elseif (is_resource($dest)) {
+            $result = @file_get_contents($filename);
+            fwrite($dest, $result);
+        } elseif (is_string($dest)) {
+            $result = @copy($filename, $dest);
         }
         $this->_iwd();