PHP 5.3 fwrite()期望参数1为资源错误 [英] php 5.3 fwrite() expects parameter 1 to be resource error

问题描述

我正在使用wamp服务器.我尝试写入文件，但出现这样的错误:警告:fwrite()期望参数1为资源，给定布尔值".我该怎么解决?

I am using wamp server. I try to write into the file but it is giving such error: "Warning: fwrite() expects parameter 1 to be resource, boolean given ". How can I solve it?

$file = 'file.txt';  
if (($fd = fopen($file, "a") !== false)) { 
  fwrite($fd, 'message to be written' . "\n");   
  fclose($fd); 
} 

推荐答案

移动括号:

if (($fd = fopen($file, "a")) !== false) { 
  fwrite($fd, 'message to be written' . "\n");   
  fclose($fd); 
}

您的代码将(fopen($file, "a") !== false)(即布尔值)的结果分配给$fd.

Your code assigned the result of (fopen($file, "a") !== false) (i.e. a boolean value) to $fd.

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