<?php // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK ] // +---------------------------------------------------------------------- // | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: liu21st <liu21st@gmail.com> // +---------------------------------------------------------------------- namespace think\db; class Expression { /** * 查询表达式 * * @var string */ protected $value; /** * 创建一个查询表达式 * * @param string $value * @return void */ public function __construct($value) { $this->value = $value; } /** * 获取表达式 * * @return string */ public function getValue() { return $this->value; } public function __toString() { return (string) $this->value; } }