我在Zend表单中有一个图像验证码
$captcha = new Zend_Form_Element_Captcha('captcha', array('captcha' => array(
'captcha' => 'Image',
'label' => 'Rasmdagi belgilarni kiriting',
'required' => true,
'wordLen' => 5,
'width' => 150,
'height' => 40,
'timeout' => 300,
'fontSize' => 32,
'gcFreq' => 5,
'font' => 'files/captcha/fonts/4.ttf',
'imgDir' => 'files/captcha/image',
'imgUrl' => '/files/captcha/image',
)));
$captcha->setIgnore(true);
我必须改变它的样式(背景)。