Objects and references
Namespaces overview
Language Reference
PHP中文手册首页
Namespaces
Table of Contents
Namespaces overview
Defining namespaces
Declaring sub-namespaces
Defining multiple namespaces in the same file
Using namespaces: Basics
Namespaces and dynamic language features
namespace keyword and __NAMESPACE__ constant
Using namespaces: Aliasing/Importing
Global space
Using namespaces: fallback to global function/constant
Name resolution rules
FAQ: things you need to know about namespaces
Objects and references
Namespaces overview
Language Reference
PHP中文手册首页
代码中国
其他文档：
Google Maps API文档
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Google文件系统论文
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《信息检索》翻译版