Expression.php
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<?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;
}
}