警告feof（）希望参数1成为资源 [英] warning feof() expects parameter 1 to be resource

问题描述

我的错误日志失控，出现以下错误

  warning feof（）希望参数1成为资源
  

和

  warning fread（）期望参数1为资源
  

负责的代码是

 <？php 
 $ file ='../upload/files/'。 $ FILEX; 
 header（Content-Disposition：attachment; filename =。urlencode（$ file））; 
 header（Content-Type：application / force-download）; 
 header（Content-Type：application / octet-stream）; 
 header（Content-Type：application / download）; 
 header（Content-Description：File Transfer）; 
 header（Content-Length：。filesize（$ file））; 
 flush（）; //这并不重要。 
 
 $ fp = fopen（$ file，r）; 
 while（！feof（$ fp））{
 echo fread（$ fp，65536）; 
 flush（）; //这对于大量下载是必不可少的
} 
 fclose（$ fp）; 
？> 
  

我使用这个代码进行头文件下载，但是现在已经出错了 - 在任何人询问我已经尝试过我尝试过google但仍然不完全明白错误信息。

解决方案

fopen失败并返回false。
false不是资源，因此是警告。

最好在将$ fp注入资源类型的参数之前测试$ fp：

  if（（$ fp = fopen（$ file，r）））{
 [...] 
} 
  / pre> 
My error logs are getting out of control with the two below errors
warning feof() expects parameter 1 to be resource
and
warning fread() expects parameter 1 to be resource
The bit of code responsible is
<?php
    $file = '../upload/files/' . $filex;
    header("Content-Disposition: attachment; filename=" . urlencode($file));
    header("Content-Type: application/force-download");
    header("Content-Type: application/octet-stream");
    header("Content-Type: application/download");
    header("Content-Description: File Transfer");
    header("Content-Length: " . filesize($file));
    flush(); // this doesn't really matter.

    $fp = fopen($file, "r");
    while (!feof($fp)) {
        echo fread($fp, 65536);
        flush(); // this is essential for large downloads
    }
    fclose($fp);
?> 
I used this code for header downloads but its freaking out right now - before anyone asks what I have tried, I tried google but still don't fully understand the error message.
解决方案
fopen fails and returns false.
false is not a resource, thus the warning. 

You'd better test $fp before injecting it as a resource-like argument:
if(($fp = fopen($file, "r"))) {
    [...]
}


                        
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