PHP的命名空间, 实现的还真是简单.

当你有如下代码:

<?php
  namespace Yaf;
  class Application {
  }

其实就相当于, 你声明了一个名字为A\B的类, 当然, 你不能直接这么申明(只是不能在PHP脚本中这么申明).

PHP5.3 α2 已经放出1个多月了, 最近一直都忙一些私人的事情, 今天终于有点时间.

赶紧下来试用, apache2.x + php5.3 alpha2

changes:

• Namespaces (documentation maybe out dated)
• Late static binding and __callStatic
• Lambda functions and closures
• Addition of the intl, phar (phar is scheduled for some more work a head of alpha2), fileinfo and sqlite3 extensions
• Optional cyclic garbage collection
• Optional support for the MySQLnd replacement driver for libmysql
• Windows older than Windows 2000 (Windows 98, NT4, etc.) are not supported anymore (details)
• New syntax features like NOWDOC, limited GOTO, ternary short cut “?:”