Discuss three methods of deleting folders in PHP_PHP Tutorial-PHP Tutorial-php.cn

Discuss three methods of deleting folders in PHP_PHP Tutorial

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Release： 2016-07-21 15:07:52

Original

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1. Recursive method

Copy code The code is as follows:

deleteDir( $dir)
{
if (rmdir($dir)==false && is_dir($dir)) {
 if ($dp = opendir($dir)) {
 while (($ file=readdir($dp)) != false) {
 if (is_dir($file) && $file!='.' && $file!='..') {
 deleteDir($file) ;
 } else {
 unlink($file);
 }
 }
 closedir($dp);
 } else {
 exit('Not permission'); 
 }
}
}

2. System call method

Copy the code The code is as follows:

function del_dir($dir)
{
if(strtoupper(substr(PHP_OS, 0, 3)) == 'WIN ') {
                                                                                                                                                                 🎜>



3. Round-robin method

Copy code The code is as follows:

function deltree($pathdir){echo $pathdir;//I use it when debugging

if(is_empty_dir($pathdir))//If it is empty

{
rmdir($pathdir);//Delete directly
}
else
{//Otherwise read this directory, except . and ..
$d=dir($pathdir) ;
while($a=$d->read())
{
if(is_file($pathdir.'/'.$a) && ($a!='.') && ($a!='..')){unlink($pathdir.'/'.$a);}
‐‐’'''' .$a) && ($a!='.') && ($a!='..'))
$a))//Is it empty? >}
If (IS_EMPTY_DIR ($ PATHDIR. '/'. $ A))
{// If it is empty, delete
rmdir ($ PATHDIR. '/'. $ A); }
}
}
$ d-& gt; close ();
Echo "must first delete all files in the directory"; //
} }
function is_empty_dir($pathdir)
{
//Judge whether the directory is empty, isn’t my method very good? Just see if there are other things besides . and .. that are not empty
$d=opendir($pathdir);
$i=0;
while($a=readdir($d))
{
$i++;
}
closedir($d);
if($i>2){return false;}
else return true;
}