PHP: Declaring sub-namespaces

Defining multiple namespaces in the same file

Last updated: Tue, 09 Feb 2010

Declaring sub-namespaces

Much like directories and files, PHP namespaces also contain the ability to specify a hierarchy of namespace names. Thus, a namespace name can be defined with sub-levels:

Example #1 Declaring a single namespace with hierarchy

<?php
namespace MyProject\Sub\Level;
 
const CONNECT_OK = 1;
class Connection { /* ... */ }
function connect() { /* ... */  }
 
?>

The above example creates constant MyProject\Sub\Level\CONNECT_OK, class MyProject\Sub\Level\Connection and function MyProject\Sub\Level\connect.

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Defining multiple namespaces in the same file

Defining namespaces

Last updated: Tue, 09 Feb 2010