PHP：不能重新声明类 [英] PHP: cannot redeclare class

问题描述

所以我在这种情况下有3个类。

  Connection.php 
 Engineer.php 
 Status.php 
  

工程师和状态类实际上都使用连接。没有问题，但现在我在一个页面中使用这两个类

 致命错误：Can not redeclare类连接
  

有没有办法？在这两个类中，我需要从连接类进行db访问。

谢谢，

Jonesy

$而不是使用include（）使用require_once（）来将Connection.php导入到Engineer.php和Status.php中。

$ b

$ b

So I have 3 classes in this situation.

Connection.php
Engineer.php
Status.php

Both Engineer and Status classes actually use connection. Hasn't been a problem but now that I'm using both classes in a page I'm getting

Fatal error: Cannot redeclare class Connection

Is there a way round this? In both classes I need db access from the connection class.

Thanks,

Jonesy

解决方案

instead of using include() use require_once() for importing Connection.php into Engineer.php and Status.php.

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