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ThinkPHP中order()使用方法详解,thinkphporder
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ThinkPHP中order()使用方法详解,thinkphporder

Jun 13, 2016 am 08:41 AM
order thinkphp

ThinkPHP中order()使用方法详解,thinkphporder

本文介绍ThinkPHP的order()方法的用法。order方法可以用于对数据库操作的结果进行排序。即相当于是在select语句中一个order by的子句。

order方法属于模型的连贯操作方法之一,用于对数据库操作的结果进行排序。即相当于是在select语句中一个order by的子句。

用法

$Model->where('status=1')->order('id desc')->limit(5)->select();
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注意:连贯操作方法没有顺序,可以在select方法调用之前随便改变调用顺序。
支持对多个字段的排序,例如:

$Model->where('status=1')->order('id desc,status')->limit(5)->select();
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如果没有指定desc或者asc排序规则的话,默认为asc。

如果你的字段和mysql关键字有冲突,那么建议采用数组方式调用,例如:

$Model->where('status=1')->order(array('order','id'=>'desc'))->limit(5)->select();
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补充:

Thinkphp无法使用->order() 排序的两种解决办法!

使用ThinkPHP,却发现无法使用->order($order)来排序。

$order = " info.date2 desc ";

很遗憾的是这样写结果order却变成了 order by date2 limit ... desc不见了。

解决办法一:

$order 里面两边不能有任何空格,$order = "info.date2 desc";(正确)。$order = " info.date2 desc";(错误!)

解决办法二:

打开文件:D:\WebSite\Zbphp.com\www\ThinkPHP\Extend\Model\ViewModel.class.php

修改第136行,改成 $array = explode(' ', trim($order));加上trim 保存即可,如图所示:

推荐使用第二种方法,不过期待thinkphp官网可以修正这个小问题,免得用户自己修改内核代码

关于ThinkPHP中order()使用方法就给大家介绍这么多,希望对您有所帮助,同时也非常感谢大家对帮客之家网站的支持!

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