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按ID返回一个二级目录

enjoy — Fri, 08 Jan 2010 13:39:44 +0000

二级目录

作者：enjoy http://www.9enjoy.com

按ID返回一个二级目录，用于将内容平均分布在36*36个目录中。

36个目录为a-z0-9

function IDcat($id){

$p0 = $id % 1296;

$p1 = ceil($p0 / 36)-1;

$p2 = ($p0-1) % 36 ;

return IDnum($p1).’/’.IDnum($p2).’/';

}

function IDnum($i){

if($i<10){

if($i==-1){

return ‘z’;

}else{

return $i;

}

}else{

return chr(87+$i);

}

连续建目录

enjoy — Mon, 30 Mar 2009 15:52:49 +0000

/*
* 功能：连续建目录
* $dir 目录字符串
*/
function makedir( $dir, $mode = “0777″ ) {
if( ! $dir ) return 0;
$dir = str_replace( “\\”, “/”, $dir );
$rootdir = “./”;
$mdir = “”;
foreach( explode( “/”, $dir ) as $val ) {
$mdir .= $val.”/”;
$newmdir=”";
if( $val == “..” || $val == “.” || $val=”") continue;
$newmdir = $rootdir.$mdir;
if( ! file_exists( $newmdir ) ) {
mkdir($newmdir);
chmod($newmdir,$mode);
if(! file_exists( $newmdir )){
echo “创建目录 [".$newmdir."]失败.”;
exit;
}
}
}
return true;
}

SureRemoveDir-删除目录

enjoy — Fri, 22 Aug 2008 20:37:12 +0000

// ggarciaa at gmail dot com (04-July-2007 01:57)
// I needed to empty a directory, but keeping it
// so I slightly modified the contribution from
// stefano at takys dot it (28-Dec-2005 11:57)
// A short but powerfull recursive function
// that works also if the dirs contain hidden files
//
// $dir = the target directory
// $DeleteMe = if true delete also $dir, if false leave it alone

function SureRemoveDir($dir, $DeleteMe) {
if(!$dh = @opendir($dir)) return;
while (false !== ($obj = readdir($dh))) {
if($obj==’.’ || $obj==’..’) continue;
if (!@unlink($dir.’/’.$obj)) SureRemoveDir($dir.’/’.$obj, true);
}

closedir($dh);
if ($DeleteMe){
@rmdir($dir);
}
}

//SureRemoveDir(‘EmptyMe’, false);
//SureRemoveDir(‘RemoveMe’, true);