clicaptcha

<!-- 引入 jquery 和 js.cookie -->
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/js-cookie/2.2.1/js.cookie.min.js"></script>

<!-- 在页面需要位置加入隐藏域 -->
<input type="hidden" id="clicaptcha-submit-info" name="clicaptcha-submit-info">

$('#clicaptcha-submit-info').clicaptcha({
    src: '../clicaptcha.php',
	success_tip: '验证成功！',
	error_tip: '未点中正确区域，请重试！',
	callback: function(){
		//...
	}
});

//后端进行二次验证
require('../clicaptcha.class.php');
$clicaptcha = new clicaptcha();
echo $clicaptcha->check($_POST['clicaptcha-submit-info']) ? '后端二次验证成功' : '后端二次验证失败';