PHP implements directory traversal and deletion based on dir class

This article mainly introduces how PHP uses the built-in dir class to implement directory traversal and deletion. It involves the use skills of the dir class in PHP. It has certain reference value. Friends who need it can refer to the example of this article.

Describes how PHP uses the built-in dir class to implement directory traversal and deletion. The specific implementation method is as follows:

function clearDir($dir)
{
 if (file_exists($dir))
 {
  if(!is_dir($dir))
   exit("{$dir}不是一个目录");
  else
  {
   $dirObj = dir($dir);
   while ($file = $dirObj->read())
   {
    if (is_dir($dir .'/'. $file) && $file !== '.' && $file !== '..')
    {
     clearDir($dir .'/'. $file);
     if (@!rmdir($dir .'/'. $file)) 
      echo "没有权限删除{$dir}/{$file}目录 <br/>";
    }
    elseif ($file !== &#39;.&#39; && $file !== &#39;..&#39;)
    {
     if (unlink($dir .&#39;/&#39;. $file)) 
      echo "{$file}文件成功删除<br />";
    }
   }
  }
 }
 else
  exit("{$dir}不存在");
}
clearDir(&#39;./demo&#39;);

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's learning.

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