PHPAjax上传文件实例[ajaxfileupload.js]_PHP教程

if ((($_FILES["file1"]["type"] == "image/gif")
|| ($_FILES["file1"]["type"] == "image/jpeg")
|| ($_FILES["file1"]["type"] == "image/bmp")
|| ($_FILES["file1"]["type"] == "image/pjpeg"))
&& ($_FILES["file1"]["size"] < 100000)){//100KB
$extend = explode(".",$_FILES["file1"]["name"]);
$key = count($extend)-1;
$ext = ".".$extend[$key];
$newfile = time().$ext;

if(!file_exists('upload')){mkdir('upload');}
move_uploaded_file($_FILES["file1"]["tmp_name"],"upload/" . $newfile);
@unlink($_FILES['file1']);
echo $newfile;
}else {
echo 'error';
}
?>