php sae 图种生成

<?php
require('db.php');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {

        $stor = new SaeStorage();

        //确保有足够的空间
        $stor_size=$stor->getDomainCapacity($domain);//获取已用大小
        if($stor_size>=2*1000*1024*1024)
        {
            //删除2个文件

        }

    $bitfile = $_FILES[upfile];
    $picfile = $_FILES[uppic] ;
    if($bitfile['size'] >=1024 * 1024 * 10){
        echo '<script>alert("请上传小于10m的种子文件！")</script>';
        return ;
    }
    if(empty($picfile)){//上传了图片的话

        //文件类型为图片，pjpeg为ie中的jpg类型，并且文件大小不得大于10m
        if (in_array($picfile['type'], array('image/gif', 'image/jpeg', 'image/pjpeg', 'image/png'))
            && $picfile['size'] <=1024 * 1024 * 10) {
            $fp = fopen($picfile['tmp_name'], "rb");
            $picdata = fread($fp, filesize($picfile['tmp_name']));

        }else{
            echo '<script>alert("请上传小于10m的图片！")</script>';
            return ;
        }
    }else{
        //如果没上传文件就使用这一个图片
        $picdata = $stor->read($domain,$BasePicture);
    }
    $fp = fopen($bitfile['tmp_name'],'rb');
    $bitdata = fread($fp,filesize($bitfile['tmp_name']));

    //合并的临时文件
    $fileName = md5(time()).".png";
    $filePath = SAE_TMP_PATH.$fileName;

    $fp = fopen($filePath,'w');
    fwrite($fp,$picdata);
    fwrite($fp,$bitdata);
    fclose($fp);

    //上传文件
    $url = $stor->upload($domain,$fileName,$filePath);

    echo "<script>window.location.href=\\"down.php?url=$url\\"</script>";  

}

?>
//该片段来自于http://outofmemory.cn