thinkphp验证码

//控制器
//提交确认
public function logincl() {   
$verCode = trim(I('post.verCode'));//驗證碼
            if(!$this->check_verify($verCode)){
                die("<script>alert('驗證碼錯誤,請刷新驗證碼！');history.back(-1);</script>");
            }

}
//验证码验证
    function check_verify($code){
    	$verify = new \Think\Verify();
    	return $verify->check($code);
    }
     //验证码生成 -》点击图片更换验证码
    function verify() {
    	$config =    array(
    			'fontSize'    =>    16,    // 驗證碼字體大小
    			'length'      =>    5,     // 驗證碼位數
    			'useCurve'    =>    false, // 關閉驗證碼雜點
    		'useCurve' => false,
    	);
    	
    	$Verify = new \Think\Verify($config);
    	$Verify->codeSet = '0123456789';
    	$Verify->entry();
    }




//前端页面
 <tr>
    <td width="42%"><input  name="verCode" id="verCode" type="text" class="loginuser1"  onclick="JavaScript:this.value=''"/>&nbsp;</td>

    <td width="58%">&nbsp;<img src="/admin.php/Home/login/verify" name="myHeader" height="35" id="myHeader" onClick="this.src='/admin.php/Home/login/verify?'+Math.random();" /></td>
  </tr>