


How to use PHP to delete files recursively to achieve code summary
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('./复件 复件 复件 复件 复件 复件 复件 复件 aaa'); function deltree($pathdir) { //echo $pathdir.'<br/>';//我调试时用的 if(is_empty_dir($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.'/'.$a) && ($a!='.') && ($a!='..')) { unlink($pathdir.'/'.$a); //如果是文件就直接删除 }elseif(is_dir($pathdir.'/'.$a) && ($a!='.') && ($a!='..')) //如果是目录 { if(!is_empty_dir($pathdir.'/'.$a))//是否为空 { deltree($pathdir.'/'.$a); //如果不是,调用自身 }else { rmdir($pathdir.'/'.$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($i>2){return false;} else return true; } ?>
Recursive method
<?php header("Content-Type:text/html; charset=gb2312"); if(deleteDir('./复件 复件 复件 复件 复件 复件 复件 复件 复件 复件 复件 aaa')) echo "删除成功"; function deleteDir($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!='.' && $file!='..') { //echo $file=$dir.'/'.$file;echo '<br/>'; $file=$dir.'/'.$file; if (is_dir($file)) //是真实目录 { deleteDir($file); }else { unlink($file); } } } closedir($dp); }else { return false; } } if (is_dir($dir) && @rmdir($dir)==false) //是目录删除不了 return false; return true; } ?>
Introducing two more recursive methods:
function recursiveDelete($dir) { if ($handle = @opendir($dir)) { while (($file = readdir($handle)) !== false) { if (($file == ".") || ($file == "..")) { continue; } if (is_dir($dir . '/' . $file)) { // call self for this directory recursiveDelete($dir . '/' . $file); } else { unlink($dir . '/' . $file); // remove this file } } @closedir($handle); rmdir ($dir); } }
/* 自定义的删除函数,可以删除文件和递归删除文件夹 */ function my_del($path) { if(is_dir($path)) { $file_list= scandir($path); foreach ($file_list as $file) { if( $file!='.' && $file!='..') { my_del($path.'/'.$file); } } @rmdir($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 } } $path='d:/技术文档 - 副本'; //要删除的文件夹 //如果php文件不是ANSI,而是UTF-8模式, //而且要删除的文件夹中包含汉字字符的话,调用函数前需要转码 //$path=iconv( 'utf-8', 'gb2312',$path ); my_del($path);
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