environment.php

<?php
/**
 * Bare minimum setup of the environment to use Vanilla's classes.
 *
 * @author Alexandre (DaazKu) Chouinard <alexandre.c@vanillaforums.com>
 * @copyright 2009-2019 Vanilla Forums Inc.
 * @license GPL-2.0-only
 */

// Environment
define("ENVIRONMENT_PHP_VERSION", "7.2");
define("ENVIRONMENT_PHP_NEXT_VERSION", "7.3");

if (version_compare(phpversion(), ENVIRONMENT_PHP_VERSION) < 0) {
    die("Vanilla requires PHP " . ENVIRONMENT_PHP_VERSION . " or greater.");
}

// Define the constants we need to get going.
if (!defined("APPLICATION")) {
    define("APPLICATION", "Vanilla");
}
if (!defined("DS")) {
    define("DS", DIRECTORY_SEPARATOR);
}
if (!defined("PATH_ROOT")) {
    define("PATH_ROOT", getcwd());
}

/**
 * Bootstrap Before
 *
 * This file gives developers the opportunity to hook into Garden before any
 * real work has been done. Nothing has been included yet, aside from this file.
 * No Garden features are available yet.
 */
$isWeb = PHP_SAPI !== "cli" && isset($_SERVER["REQUEST_METHOD"]);
if ($isWeb && file_exists(PATH_ROOT . "/conf/bootstrap.before.php")) {
    require_once PATH_ROOT . "/conf/bootstrap.before.php";
}

/**
 * Define Core Constants
 *
 * Garden depends on the presence of a certain base set of defines that allow it
 * to be aware of its own place within the system. These are conditionally
 * defined here, in case they've already been set by a zealous bootstrap.before.
 */

// Path to the primary configuration file.
if (!defined("PATH_CONF")) {
    define("PATH_CONF", PATH_ROOT . "/conf");
}

// Include default constants.
require_once PATH_CONF . "/constants.php";

// Make sure a default time zone is set.
// Do NOT edit this. See config `Garden.GuestTimeZone`.
date_default_timezone_set("UTC");

// Make sure the mb_* functions are utf8.
if (function_exists("mb_internal_encoding")) {
    mb_internal_encoding("UTF-8");
}
ini_set("default_charset", "UTF-8");

// Include the core autoloader.
if (!include_once PATH_ROOT . "/vendor/autoload.php") {
    die("Could not find the autoloader. Did you forget to run 'composer install' in '" . PATH_ROOT . "' ?\n");
}
spl_autoload_register([Vanilla\AliasLoader::class, "autoload"]);

// Classes are autoloaded
// Let's load up the application version.
if (!defined("APPLICATION_VERSION")) {
    $version = "unknown";
    try {
        $version = \Vanilla\FileUtils::getCached(PATH_CACHE . "/version.php", function () {
            $versionJsonContents = \Vanilla\FileUtils::getArray(PATH_ROOT . "/version.json");
            return $versionJsonContents["version"] ?? "unknown";
        });
    } catch (Throwable $e) {
        // Don't completely blow up if we can't load this file.
        trigger_error($e->getMessage(), E_USER_WARNING);
    }

    // Rules for the versioning
    // {Release version}-{? SNAPSHOT if it's a dev build}
    define("APPLICATION_VERSION", $version);
}