Example of php uploading files and creating recursive directories

/**
* Upload files Create recursive directories
* edit: bbs.it-home.org
*/
$uid=$_REQUEST['uid'];
$avatar = 'D:/www/discuz/uc_server/data /avatar/'.get_avatar($uid, $size, $type);
$dir=dirname($avatar);
//Move the temporary file after the directory is successfully created
if(mkdirs ($dir)){
　if($_FILES["pic"]["error"] >= 0){
　　if(move_uploaded_file($_FILES['pic']['tmp_name'],$avatar)){
　　　$errorcode=1;
　　}else{
　　　$errorcode=0;
　　 $errormsg="File move failed";
　　}
　　}else{
　　$errorcode=0;
　　$errormsg=$_FILES['pic'][ 'error'];
　}
}
$back=array("errorcode"=>$errorcode,'errormsg'=>$errormsg);
echo json_encode($back);
< p>//Return the path where the image is to be stored
function get_avatar($uid, $size = 'middle', $type = '') {
　$size = in_array($size, array('big', 'middle', 'small')) ? $size : 'middle';
 $uid = abs(intval($uid));
 $uid = sprintf("%09d", $uid);
 $dir1 = substr($uid, 0, 3);
 $dir2 = substr($uid, 3, 2);
 $dir3 = substr($uid, 5, 2);
 $typeadd = $type == 'real' ? '_real' : ' ';
　 return $dir1.'/'.$dir2.'/'.$dir3.'/'.substr($uid, -2).$typeadd."_avatar_$size.jpg";
}
//Recursively create a directory. If the $dir passed is not an absolute path, it will be at the same level as the directory where this method is run.
function mkdirs($dir){
　if(!is_dir($dir)){
　　if(!mkdirs(dirname($dir))){
　　　return false;
　　}
　if(!mkdir($dir,0777)){
　　　return false;
　　}
　　}
return true;
}
?> ;