sina weibo image uploader

class Sinaupload{
    /**
     * 上传图床的cookie
     */
    private $cookie = '';
    /**
     * 上传图床接口
     */
    private $url = 'http://picupload.service.weibo.com/interface/pic_upload.php'
        .'?mime=image%2Fjpeg&data=base64&url=0&markpos=1&logo=&nick=0&marks=1&app=miniblog';
    public function __construct($cookie){
        $this->cookie = $cookie;
    }
    /**
     * 上传图片到微博图床
     * @param $file 图片文件/图片url
     * @param $multipart 上传方式，true采用本地上传，false采用url上传
     * @return 返回的json数据
     */
    public function upload($file, $multipart = true) {
        if($multipart) {
            $this->url .= '&cb=http://weibo.com/aj/static/upimgback.html?_wv=5&callback=STK_ijax_'.time();
            if (class_exists('CURLFile')) {     // php 5.5
                $post['pic1'] = new \CURLFile(realpath($file));
            } else {
                $post['pic1'] = '@'.realpath($file);
            }
        } else {
            $post['b64_data'] = base64_encode(file_get_contents($file));
        }
        // Curl提交
        $ch = curl_init($this->url);
        curl_setopt_array($ch, array(
            CURLOPT_POST => true,
            CURLOPT_VERBOSE => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPHEADER => array("Cookie:" . $this->cookie),
            CURLOPT_POSTFIELDS => $post,
        ));
        $output = curl_exec($ch);
        curl_close($ch);
        // 正则表达式提取返回结果中的json数据
        preg_match('/({.*)/i', $output, $match);
        if(!isset($match[1])) return '';
        return $match[1];
    }
    /** 
     * 获取不同尺寸的图片链接
     * @param string $pid 微博图床pid，或者微博图床链接(带后缀)。
     * @param string $size 图片尺寸 0-7(数字越大尺寸越大)
     * @param bool $https (true) 是否使用 https 协议 
     * @return string 图片链接 当 $pid 既不是 pid 也不是合法的微博图床链接时返回空值 
     */  
    public function getImageUrl($pid, $size = 0, $https = true){  
        $sizeArr = array('large', 'mw1024', 'mw690', 'bmiddle', 'small', 'thumb180', 'thumbnail', 'square');
        $pid = trim($pid);  
        $size = $sizeArr[$size];  
        // 传递 pid  
        if (preg_match('/^[a-zA-Z0-9]{32}$/', $pid) === 1) {  
            return ($https ? 'https' : 'http') . '://' . ($https ? 'ws' : 'ww')  
                . ((crc32($pid) & 3) + 1) . ".sinaimg.cn/" . $size  
                . "/$pid." . ($pid[21] === 'g' ? 'gif' : 'jpg');  
        }  
        // 传递 url  
        $url = $pid;  
        $imgUrl = preg_replace_callback('/^(https?:\/\/[a-z]{2}\d\.sinaimg\.cn\/)'  
            . '(large|bmiddle|mw1024|mw690|small|square|thumb180|thumbnail)'  
            . '(\/[a-z0-9]{32}\.(jpg|gif))$/i', function ($match) use ($size) {  
                return $match[1] . $size . $match[3];  
            }, $url, -1, $count);  
        if ($count === 0) {  
            return '';  
        }  
        return $imgUrl;  
    }  
    /**
     * 新浪微博登录(无加密接口版本)
     * @param  string $u 用户名
     * @param  string $p 密码
     * @return string    返回最有用最精简的cookie
     */
    public static function login($u,$p){
        $loginUrl = 'https://login.sina.com.cn/sso/login.php?client=ssologin.js(v1.4.15)&_=1403138799543';
        $loginData['entry'] = 'sso';
        $loginData['gateway'] = '1';
        $loginData['from'] = 'null';
        $loginData['savestate'] = '30';
        $loginData['useticket'] = '0';
        $loginData['pagerefer'] = '';
        $loginData['vsnf'] = '1';
        $loginData['su'] = base64_encode($u);
        $loginData['service'] = 'sso';
        $loginData['sp'] = $p;
        $loginData['sr'] = '1920*1080';
        $loginData['encoding'] = 'UTF-8';
        $loginData['cdult'] = '3';
        $loginData['domain'] = 'sina.com.cn';
        $loginData['prelt'] = '0';
        $loginData['returntype'] = 'TEXT';
        return self::loginPost($loginUrl,$loginData); 
    }
    /**
     * 发送微博登录请求
     * @param  string $url  接口地址
     * @param  array  $data 数据
     * @return json         算了，还是返回cookie吧//返回登录成功后的用户信息json
     */
    private static function loginPost($url,$data){
        $tmp = '';
        if(is_array($data)){
            foreach($data as $key =>$value){
                $tmp .= $key."=".$value."&";
            }
            $post = trim($tmp,"&");
        }else{
            $post = $data;
        }
        $ch = curl_init();
        curl_setopt($ch,CURLOPT_URL,$url); 
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1); 
        curl_setopt($ch,CURLOPT_HEADER,1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch,CURLOPT_POST,1);
        curl_setopt($ch,CURLOPT_POSTFIELDS,$post);
        $return = curl_exec($ch);
        curl_close($ch);
        return 'SUB' . getSubstr($return,"Set-Cookie: SUB",'; ') . ';';
    }
}