为什么QR Code没有在我的代码编辑器中调整大小

Question

我正在使用tcpdf，并且在我的tcpdf中放置了QR码。即使我已经初始化了qr代码的大小并在我的tcpdf代码中调整了大小，我似乎也无法调整qr代码的大小。看一下我的控制器。

    $configure['cacheable']    = TRUE; //boolean, the default is true
    $configure['cachedir']     = './assets/'; //string, the default is 
    application/cache/
    $configure['errorlog']     = './assets/'; //string, the default is 
    application/logs/
    $configure['imagedir']     = './assets/eventQrcode/'; 
    $configure['quality']      = TRUE; //boolean, the default is true
    $configure['size']         = '1024'; //integer, the default is 1024
    $config['overwrite'] = TRUE;
    $configure['width'] = '500';
    $configure['height'] = '500';
    $configure['black']        = array(224,255,255); // array, default is 
     array(255,255,255)
    $configure['white']        = array(70,130,180); // array, default is 
    array(0,0,0)
    $this->ciqrcode->initialize($configure);

    $image_name2 = $activityNaming.'.png'; 
    $image_name = preg_replace("/ /", "-", $image_name2);    

    $codeContents = $activityNaming. ";" .$actId;



    $params['data'] = $codeContents; 
    $params['level'] = 'H'; //H=High
    // $params['width'] = 500;
    // $params['height'] = 500;
    $params['size'] = '10';
    // $params['size'] = '25';
    $params['savename'] = FCPATH.$configure['imagedir'].$image_name; 
    $this->ciqrcode->generate($params); 
    $this->User_model->SubmitQr($image_name, $activityId);

现在这是我的tcpdf代码。

 $pdf->Image($imagebefore, '', '', 500, 500, 'PNG', '', 'C', true, 300, 
 '',false, false, 0, false, false, false, false);
 $pdf->Image('@' . $imagebefore);