页面：

 <li><a href="javascript:void(0);" class="language" data="en"><span class="language " data="en">EN</span></a></li>
 <li><a href="javascript:void(0);" class="language curr" data="cn"><span class="language " data="cn">Chinese</span></a></li>
复制代码
<script>
    $(function(){
        $('.language').click(function(){
            var lan = $(this).attr('data');
            $.get(
                '/about/changeLang',
                {lang:lan},function(data){
                    window.location.href='/';
                }
            )
        })
    })
</script>
复制代码

后台：

    public function changeLang() {
        $lang = I('lang');
        session('lang', $lang);
        exit;
    }