<"daily_device_installs,current_device_installs,daily_user_installs,total_user_installs,current_user_installs,daily_device_uninstalls,daily_user_uninstalls,daily_device_upgrades"; // google modify 2013-08-06
  
    // login google play
    $this->loginAuth($this->username, $this->password);

    // download report zip
    return $this->downloadReport($package, $sd, $ed, $dim, $met, $this->dev_acc, $downloadFile);
  
  }

  /* login google play,create cookies
  * @param String $username
  * @param String $password 
  * @return boolean
  */
  private function loginAuth($username, $password){
    
    // step1
    $mainUrl = "https://play.google.com/apps/publish/";

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $mainUrl);
    curl_setopt($ch, CURLOPT_COOKIEJAR, GOOGLE_PLAY_COOKIE_FILE);
    curl_setopt($ch, CURLOPT_COOKIEFILE, GOOGLE_PLAY_COOKIE_FILE); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_exec($ch);
    curl_close($ch);

    // step 2
    $serviceLoginUrl = "https://accounts.google.com/ServiceLogin".$mainUrl;
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $serviceLoginUrl);
    curl_setopt($ch, CURLOPT_COOKIEJAR, GOOGLE_PLAY_COOKIE_FILE);
    curl_setopt($ch, CURLOPT_COOKIEFILE, GOOGLE_PLAY_COOKIE_FILE); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $serviceLoginRespHtml = curl_exec($ch);
    curl_close($ch);

    preg_match('/name="dsh"\s*id="dsh"\s*value="(.*"\s*/i', $serviceLoginRespHtml, $matches); // get dsh
    $dsh = $matches[1];

    preg_match('/name="GALX"\s*value="(.*"\s*/i', $serviceLoginRespHtml, $matches); // get GALX
    $galx = $matches[1];

    // step 3
    $loginGoogleUrl = "https://accounts.google.com/ServiceLoginAuth";
    $postFields = "Referer=".$serviceLoginUrl;
    $postFields .= "&AllowAutoRedirect=false";
    $postFields .= "&continue=".$mainUrl;
    $postFields .= "&dsh=".$dsh;
    $postFields .= "&h1=en";
    $postFields .= "&GALX=".$galx;
    $postFields .= "&Email=".$username;
    $postFields .= "&Passwd=".$password;
    $postFields .= "&signIn=Sign+in";
    $postFields .= "&PersistentCookie=yes";
    
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $loginGoogleUrl);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
    curl_setopt($ch, CURLOPT_COOKIEJAR, GOOGLE_PLAY_COOKIE_FILE);
    curl_setopt($ch, CURLOPT_COOKIEFILE, GOOGLE_PLAY_COOKIE_FILE); 
    curl_setopt($ch, CURLOPT_HEADER, true); 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_exec($ch);
    curl_close($ch);

    // login cookies create success
    return true;
  }

  // download Report zip file
  private function downloadReport($package, $sd, $ed, $dim, $met, $dev_acc, $downloadFile) {

    $url = "https://play.google.com/apps/publish/statistics/download";
    
    $fp = fopen($downloadFile,"w");

    $ch = curl_init(); 
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($ch, CURLOPT_FILE, $fp);
    curl_setopt($ch, CURLOPT_COOKIEFILE, GOOGLE_PLAY_COOKIE_FILE); 
    curl_exec($ch); 
    curl_close($ch); 
    fclose($fp);

    if (file_exists($downloadFile)){
      return true;
    }
    return false;

  }

  /* unzip report
  * @param String $path     解压的路径
  * @param String $downloadFile zip file
  */
  public function unzipReport($path, $downloadFile){
    $exec = "unzip ".$downloadFile. " -d ".$path;
    shell_exec($exec);
    unlink($downloadFile); // delete zip file
  }
}

// demo
$username = 'testdev@gmail.com';
$password = 'abcd1234';
$dev_acc = '12345678901234567890';

$appname = 'com.testdev';
$sd = '20130417';
$ed = '20130417';
$downloadFile = 'testdev.zip';
$unzipPath = ROOT_PATH.'/testdev/';

$obj = new AndroidReportDownLoader($username, $password, $dev_acc);
if($obj->run($appname, $sd, $ed, $downloadFile)){
  $obj->unzipReport($unzipPath, $downloadFile);
}
?>