Perch 2 config with multiple environments

config.php

<?php

    $k3r_env = getenv('environment');
    if ($k3r_env === 'kimber') {
        define('PERCH_LICENSE_KEY', '');

        define("PERCH_DB_USERNAME", '');
        define("PERCH_DB_PASSWORD", '');
        define("PERCH_DB_SERVER", "localhost");
        define("PERCH_DB_DATABASE", "harewood");
        define("PERCH_DB_PREFIX", "perch2_");
    }
    else if ($k3r_env === 'staging') {
        define('PERCH_LICENSE_KEY', '');

        define("PERCH_DB_USERNAME", '');
        define("PERCH_DB_PASSWORD", '');
        define("PERCH_DB_SERVER", "localhost");
        define("PERCH_DB_DATABASE", "harewood");
        define("PERCH_DB_PREFIX", "perch2_");
    }
    else if ($k3r_env === 'live') {
        define('PERCH_LICENSE_KEY', '');

        define("PERCH_DB_USERNAME", '');
        define("PERCH_DB_PASSWORD", '');
        define("PERCH_DB_SERVER", "localhost");
        define("PERCH_DB_DATABASE", "harewood");
        define("PERCH_DB_PREFIX", "perch2_");
    }
    else {
        define('PERCH_LICENSE_KEY', '');

        define("PERCH_DB_USERNAME", '');
        define("PERCH_DB_PASSWORD", '');
        define("PERCH_DB_SERVER", "localhost");
        define("PERCH_DB_DATABASE", "harewood");
        define("PERCH_DB_PREFIX", "perch2_");
    }

    define('PERCH_EMAIL_FROM', '');
    define('PERCH_EMAIL_FROM_NAME', '');

    define('PERCH_LOGINPATH', '/perch');
    define('PERCH_PATH', str_replace(DIRECTORY_SEPARATOR.'config', '', dirname(__FILE__)));
    define('PERCH_CORE', PERCH_PATH.DIRECTORY_SEPARATOR.'core');


    define('PERCH_RESFILEPATH', PERCH_PATH . DIRECTORY_SEPARATOR . 'resources');
    define('PERCH_RESPATH', PERCH_LOGINPATH . '/resources');

    define('PERCH_HTML5', true);

?>