Home > Backend Development > PHP Tutorial > How to use PHP to delete files recursively to achieve code summary

How to use PHP to delete files recursively to achieve code summary

伊谢尔伦
Release: 2023-03-14 09:18:01
Original
1194 people have browsed it

Introducing several PHP codes that use recursive deletion of files. I hope it will be helpful to friends in their PHP learning.

Loop + Recursion

<?php 
deltree(&#39;./复件 复件 复件 复件 复件 复件 复件 复件 aaa&#39;); 
function deltree($pathdir) 
{ 
//echo $pathdir.&#39;<br/>&#39;;//我调试时用的 
if(is_empty_dir($pathdir))//如果是空的 
{ 
rmdir($pathdir);//直接删除 
} 
else 
{//否则读这个目录,除了.和..外 
$d=dir($pathdir); 
while($a=$d->read()) //下只删除$pathdir下 
{ 
if(is_file($pathdir.&#39;/&#39;.$a) && ($a!=&#39;.&#39;) && ($a!=&#39;..&#39;)) 
{ 
unlink($pathdir.&#39;/&#39;.$a); //如果是文件就直接删除 
}elseif(is_dir($pathdir.&#39;/&#39;.$a) && ($a!=&#39;.&#39;) && ($a!=&#39;..&#39;)) //如果是目录 
{ 
if(!is_empty_dir($pathdir.&#39;/&#39;.$a))//是否为空 
{ 
deltree($pathdir.&#39;/&#39;.$a); //如果不是,调用自身 
}else 
{ 
rmdir($pathdir.&#39;/&#39;.$a); //如果是空就直接删除 
} 
} 
} 
$d->close(); 
//echo "必须先删除目录下的所有文件";//我调试时用的 
rmdir($pathdir); 
} 
} 
function is_empty_dir($pathdir) 
{ 
//判断目录是否为空,我的方法不是很好吧?除了.和..之外有其他东西不是为空 
$d=opendir($pathdir); 
$i=0; 
while($a=readdir($d)) 
{ 
$i++; 
} 
closedir($d); 
if($i>2){return false;} 
else return true; 
} 
?>
Copy after login

Recursive method

<?php 
header("Content-Type:text/html; charset=gb2312"); 
if(deleteDir(&#39;./复件 复件 复件 复件 复件 复件 复件 复件 复件 复件 复件 aaa&#39;)) 
echo "删除成功"; 
function deleteDir($dir) 
{ 
if (@rmdir($dir)==false && is_dir($dir)) //删除不了,进入删除所有文件 
{ 
if ($dp = opendir($dir)) 
{ 
while (($file=readdir($dp)) != false) 
{ 
if($file!=&#39;.&#39; && $file!=&#39;..&#39;) 
{ //echo $file=$dir.&#39;/&#39;.$file;echo &#39;<br/>&#39;; 
$file=$dir.&#39;/&#39;.$file; 
if (is_dir($file)) //是真实目录 
{ 
deleteDir($file); 
}else { 
unlink($file); 
} 
} 
} 
closedir($dp); 
}else 
{ 
return false; 
} 
} 
if (is_dir($dir) && @rmdir($dir)==false) //是目录删除不了 
return false; 
return true; 
} 
?>
Copy after login

Introducing two more recursive methods:

function recursiveDelete($dir)
{
  if ($handle = @opendir($dir))
  {
  while (($file = readdir($handle)) !== false)
  {
   if (($file == ".") || ($file == ".."))
   {
    continue;
   }
   if (is_dir($dir . &#39;/&#39; . $file))
   {
    // call self for this directory
    recursiveDelete($dir . &#39;/&#39; . $file);
   }
   else
   {
    unlink($dir . &#39;/&#39; . $file); // remove this file
   }
  }
  @closedir($handle);
  rmdir ($dir);
  }
}
Copy after login
/*
 自定义的删除函数,可以删除文件和递归删除文件夹
*/
 function my_del($path)
{
 if(is_dir($path))
 {
   $file_list= scandir($path);
   foreach ($file_list as $file)
   {
    if( $file!=&#39;.&#39; && $file!=&#39;..&#39;)
    {
     my_del($path.&#39;/&#39;.$file);
    }
   }
   @rmdir($path);
   //这种方法不用判断文件夹是否为空,
   //因为不管开始时文件夹是否为空,到达这里的时候,都是空的 
 }
 else
 {
  @unlink($path);
  //这两个地方最好还是要用@屏蔽一下warning错误,看着闹心
 }
}
$path=&#39;d:/技术文档 - 副本&#39;;
//要删除的文件夹
//如果php文件不是ANSI,而是UTF-8模式,
//而且要删除的文件夹中包含汉字字符的话,调用函数前需要转码
//$path=iconv( &#39;utf-8&#39;, &#39;gb2312&#39;,$path );
my_del($path);
Copy after login

The above is the detailed content of How to use PHP to delete files recursively to achieve code summary. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template