<?php
/**
 * Get development environment key
 */
function get_dev_enviroment() {
    $environment = 1; // production
    if ( false !== stripos( $_SERVER['HTTP_HOST'], 'staging.' ) ) {
        $environment = 2; // dev/staging
    } elseif ( preg_match( '/localhost|127.0.0.1|.dev/', $_SERVER['HTTP_HOST'] ) ) {
        $environment = 3; // local
    } elseif ( isset( $_GET['debug'] ) ) {
        $environment = 4; // manual override (for production, ie. example.com?debug)
    }

    return $environment;
}