<?php
// side effect: change ini settings
ini_set('error_reporting', E_ALL);

// PHP 5.3 and later:
namespace ProjeAdi\Model;

class Foo
{
}

// PHP 5.2.x and earlier:
class ProjeAdi_Model_Foo
{
}

class Foo
{
    const VERSION = '1.0';
    const DATE_APPROVED = '2012-06-01';
}