三种施用php namespace的方法

WBOY
Release: 2016-06-13 13:02:27
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三种使用php namespace的方法
PHP 5.3中的namespace其实是个不错的东西,可以简化编程,下面介绍三类在代码中
访问namespace中类的方法

1 引用namespace和类
  假设namespace的程序为namespaced-class.php
namespace Christmas\DaysOf; 

class PartridgeInAPearTree{
}


  引用方法:
  include 'namespaced-class.php';

$bird1 = new Christmas\DaysOf\PartridgeInAPearTree();
var_dump($bird1);

这个时候,NEW的时候把完整的namespace及下面的类都引入进来了

2 部分引用
   include 'namespaced-class.php';
use Christmas\DaysOf;

$bird2 = new DaysOf\PartridgeInAPearTree();
var_dump($bird2);
这里USE指定了命名空间后,在使用时,只需要引用命名空间的最后部分Daysof即可.

3 最简单的
   include 'namespaced-class.php';
use Christmas\DaysOf\PartridgeInAPearTree as Bird;           

$bird3 = new Bird();
var_dump($bird3);

这里把命名空间下的指定类都用一个自定义的名称来代替了,十分方便


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