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The principle of PHP class automatic loading and PHP chain operation

小云云
小云云Original
2018-02-03 10:16:151253browse

本文主要和大家分享php类自动装载和php链式操作的原理,希望能帮助到大家。

1、自动装载实例

目录下有3个文件:index.php load.php tests文件夹

tests文件夹里有 test1.php


';
    echo __FILE__.'
'; } }

index.php内容


load.php内容


2.链式操作原理

在一个类中有多个方法,当你实例化这个类,并调用方法时只能一个一个调用,类似:

db.php

   

index.php

where();
$db->order();
$db->limit();

   

如果要实现链式调用,这要在方法的结束添加return $this即可。

db.php

   

index.php

where()->order()->limit();

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