TP5 验证两次输入密码是否一致

增加了字段自动匹配验证规则，如password和password_confirm是自动相互验证的，只需要使用

'password'=>'require|confirm'

例子：html

<input type="password" name="password" required lay-verify="required" placeholder="请输入密码" autocomplete="off" 
class="layui-input">

 <input type="password" name="password_confirm" required lay-verify="required" placeholder="请输入密码"
 autocomplete="off" class="layui-input">

TP5代码:'password'=>'require|confirm',

$validate = new Validate([
                  'type'  => 'require',
              'username'  => 'require|max:8',
              'tel'  => 'require|max:8',
              'nickname'=>'chs',
              'tel'=>'number|length:11',
              'qq'=>'number',
              'password'=>'require|confirm',
              'email' => 'email'
                       ]);

官方文档：https://www.kancloud.cn/manual/thinkphp5/129356