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