php imagick压缩网络图片的方法

  $rawimg    = $v['fengmiantu'];
            $watermark = new \Imagick();
            $info      = file_get_contents($rawimg);
            $watermark->readImageBlob($info);
            $watermark->scaleImage(300, 9999, true);
            $filename = $this->msectime() . rand(100, 999);
            $destpath = $this->getxiangmupath1() . '/' . $filename . '.jpg';
            $watermark->setImageFormat('jpg');
            $watermark->writeImage($destpath);
            $weburl='http://111/upload/caitonglianjie/' . $filename . '.jpg';
            $sql='update 111set fengmiantu=?,isupdate=1 where id=?';
            $this->commonexecute($sql,array($weburl,$v['id']));