TP3.2写提交的验证码验证

use Otcms\Model;

php
namespace Otcms\Model;
use Think\Model;
class UserModel extends Model{
    protected $_validate = array(

        array('xingming','require','姓名不可空！'),
        array('tel','require ','手机号不可空！'),
        array('dizhi','require','地址不可空！'),
        array('youxiang',' require','邮箱不可空！'),
        array('content','require','内容不可空！'),
    );
}

 public function verify(){

        $config =    array(
            'fontSize'    =>    30,    // 验证码字体大小
            'length'      =>    4,     // 验证码位数
        );

        $verify = new\Think\Verify($config);
        $verify->entry();

    }

 public function validate(){
        $date['xingming'] = I('post.xingming');
        $date['tel'] = I('post.tel');
        $date['dizhi'] = I('post.izhi');
        $date['youxiang'] = I('post.youxiang');
        $date['content'] = I('post.content');
        $yzm = I('post.code');

        $fkyz = D("Liuyan");

        if (!$fkyz->create()){
            // 如果创建失败 表示验证没有通过 输出错误提示信息
            exit($fkyz->getError());

        }else{
        
            // 验证通过 可以进行其他数据操作
            $verify = new \Think\Verify();
            $yzmyz = $verify->check($yzm);

            if(!$yzmyz){

                $this->error('验证码错误');

            }
            else{
                $validate = M("liuyan");
                $validate->add($date);
                $this->success('添加成功');

            }
        }
    }