Introduction to PHP5 Page 8

Namespaces

Namespaces can be used to group classes or functions for convenience.

Example 14: Namespaces

<?php
namespace Math {
  class Complex {
    //...code...
    function __construct() {
      print("hey");
    }
  }
}
$m = new Math::Complex();
?>

Note how namespaces can be used to qualify the class that should be created. As a practical example
you may want to declare the same class name in different namespaces to do different things (but
with the same interface).