Discuss three methods of deleting folders in PHP_PHP Tutorial

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');
}
}
}

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



3. Round-robin method

{
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;
}