fwrite (php)并不总是写

Question

在symfony2的控制器中使用php fwrite来写入Base64镜像，文件并不总是被写入目录中。我写的文件每次都有不同的名字，所以重写相同的文件不会有问题。变量$data已经被解码。

 public function convertAction(Request $request){
    $data= $request->request->get('data');
    $filen= $request->request->get('filename');
    $uploadDir = $this->container->getParameter('upload_tmp');
    $file = $uploadDir . $filen;
    $fp = fopen($file, 'wb');
    fwrite($fp, $data);
  fclose($fp);
return new Response() ; 
}

Answer 1

如果出现错误，fopen和fwrite将返回false。当没有文件被写入时，你会从这些函数中得到false吗？

Answer 2

您可以尝试：

 public function convertAction(Request $request){
    $data= $request->request->get('data');
    $filen= $request->request->get('filename');
    $uploadDir = $this->container->getParameter('upload_tmp');
    $file = $uploadDir . $filen;
    $fp = fopen($file, 'w') or die ('Something went wrong'); // That show is an error ocurres The flag for read/write in binary secure mode "wb" does nothing with fopen()
    fwrite($fp, $data);
  fclose($fp);
return new Response() ; 
}