呵呵,忽然一个朋友问我如何删除目录,比如下面有文件呢,我说用递规呀,他说太慢了。于是就总结出了下面几种办法。
1。递规法: //我提供,好像有点不对,没测试
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。系统调用法 //大师兄提供
function del_dir($dir)
{
if(strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
$str = "rmdir /s/q " . $dir;
} else {
$str = "rm -Rf " . $dir;
}
}
3。循环法 //from: http://www.knowsky.com/1148.html
function deltree($pathdir)
{
echo $pathdir;//我调试时用的
if(is_empty_dir($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())
{
if(is_file($pathdir.'/'.$a) && ($a!='.') && ($a!='..')){unlink($pathdir.'/'.$a);}
//如果是文件就直接删除
if(is_dir($pathdir.'/'.$a) && ($a!='.') && ($a!='..'))
{//如果是目录
if(!is_empty_dir($pathdir.'/'.$a))//是否为空
{//如果不是,调用自身,不过是原来的路径+他下级的目录名
deltree($pathdir.'/'.$a);
}
if(is_empty_dir($pathdir.'/'.$a))
{//如果是空就直接删除
rmdir($pathdir.'/'.$a);
}
}
}
$d->close();
echo "必须先删除目录下的所有文件";//我调试时用的
}
}
function is_empty_dir($pathdir)
{
//判断目录是否为空,我的方法不是很好吧?只是看除了.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;
}
呵呵,足够给各种朋友用了吧,只是按照你需要和速度来论吧。
by heiyeluren 2005/07/28

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