Скрипт подмены конфигов сайта на лету

<?php

header('Content-Type: text/html; charset=utf-8');

$params = [];      // список переменных для подстановки в шаблоны файлов
$params['database_port'] = '3306';

switch ($_SERVER['HTTP_HOST']) {
    case 'site.loc':
        $params['database_server'] = 'localhost';
        $params['dbase'] = 'dbname';
        $params['database_user'] = 'dbuser';
        $params['database_password'] = 'dbpassword';
        break;

    case 'site.ru':
        $params['database_server'] = 'localhost';
        $params['dbase'] = 'dbname';
        $params['database_user'] = 'dbuser';
        $params['database_password'] = 'dbpassword';
        break;

    default:
        exit;
}

$params['table_prefix'] = 'modx_';
$params['core_url'] = '/core/';
$params['connectors_url'] = '/connectors/';
$params['manager_url'] = '/manager/';
$params['assets_url'] = '/assets/';

/***************************************************************************/

$base_path = __DIR__;
$params['host'] = $_SERVER['HTTP_HOST'];
$params['base_path'] = $base_path . '/';
$params['base_url'] = '/';
$params['core_path'] = $base_path . $params['core_url'];
$params['manager_path'] = $base_path . $params['manager_url'];
$params['connectors_path'] = $base_path . $params['connectors_url'];
$params['assets_path'] = $base_path . $params['assets_url'];
$params['processors_path'] = $params['core_path'] . 'model/modx/processors/';

$markers = [];      // какой файл какому куску кода между маркерами соответствует
$markers[ $params['connectors_path'] . 'config.core.php' ] = 'config';
$markers[ $params['manager_path'] . 'config.core.php' ] = 'config';
$markers[ $params['base_path'] . '/config.core.php' ] = 'config';
$markers[ $params['core_path'] . 'config/config.inc.php' ] = 'core_config';

if( $params['database_port'] ) {
    $params['db_port'] = ':' . $params['database_port'];
} else {
    $params['db_port'] = '';
}

//echo '<pre>' . print_r($markers, 1) . '</pre>';
//echo '<pre>' . print_r($params, 1) . '</pre>';
//echo '<pre>' . print_r($_SERVER, 1) . '</pre>';

$thisfile = file_get_contents(__FILE__);
foreach ($markers as $path => $marker) {
    preg_match("#.+-----{$marker}-----[\r\n\s]*(.+)[\r\n\s]*-----{$marker}-----.+#sm", $thisfile, $matches);
    $file = $matches[1];
    foreach ($params as $key=>$value) {
        $file = str_replace("{%{$key}%}", $value, $file);
    }
    file_put_contents($path, $file);
}

// чистим папку кеша
function RDir( $path ) {
    if ( file_exists( $path ) AND is_dir( $path ) ) {
        $dir = opendir($path);
        while ( false !== ( $element = readdir( $dir ) ) ) {
            if ( $element != '.' AND $element != '..' )  {
                $tmp = $path . '/' . $element;
                if ( is_dir( $tmp ) ) {
                    RDir( $tmp );
                } else {
                    unlink( $tmp );
                }
            }
        }
        closedir($dir);
        if ( file_exists( $path ) ) {
            rmdir( $path );
        }
    }
}
RDir( $params['core_path'] . 'cache/' );


echo '<a href="/">' . $_SERVER['HTTP_HOST'] . '</a>   ';

$mysqli = new mysqli($params['database_server'], $params['database_user'], $params['database_password'], $params['dbase'], $params['database_port'] );

if (mysqli_connect_errno()) {
    printf('Connect failed: %s\n', mysqli_connect_error());
} else {
    echo 'cоединение с БД установлено! ';
}
echo "\r\n";

/* Шаблон файлов config.core.php лежащих в корне, manager и connectors
-----config-----
<?php
define('MODX_CORE_PATH', '{%core_path%}');
define('MODX_CONFIG_KEY', 'config');
?>
-----config----- */

/* Шаблон файла core.config.inc
-----core_config-----
<?php

$database_type = 'mysql';
$database_server = '{%database_server%}{%db_port%}';
$database_user = '{%database_user%}';
$database_password = '{%database_password%}';
$database_connection_charset = 'utf8';
$dbase = '{%dbase%}';
$table_prefix = '{%table_prefix%}';
$database_dsn = 'mysql:host={%database_server%}{%db_port%};dbname={%dbase%};charset=utf8';
$config_options = array (
);
$driver_options = array (
);

$lastInstallTime = 1571553474;

$site_id = 'modx5dac00c2023563.39300708';
$site_sessionname = 'SN5bf2a43920e0f';
$https_port = '443';
$uuid = '2ddc828e-9ca5-401b-9cb9-f5883e2fd6ff';

if (!defined('MODX_CORE_PATH')) {
    $modx_core_path= '{%core_path%}';
    define('MODX_CORE_PATH', $modx_core_path);
}
if (!defined('MODX_PROCESSORS_PATH')) {
    $modx_processors_path= '{%processors_path%}';
    define('MODX_PROCESSORS_PATH', $modx_processors_path);
}
if (!defined('MODX_CONNECTORS_PATH')) {
    $modx_connectors_path= '{%connectors_path%}';
    $modx_connectors_url= '{%connectors_url%}';
    define('MODX_CONNECTORS_PATH', $modx_connectors_path);
    define('MODX_CONNECTORS_URL', $modx_connectors_url);
}
if (!defined('MODX_MANAGER_PATH')) {
    $modx_manager_path= '{%manager_path%}';
    $modx_manager_url= '{%manager_url%}';
    define('MODX_MANAGER_PATH', $modx_manager_path);
    define('MODX_MANAGER_URL', $modx_manager_url);
}
if (!defined('MODX_BASE_PATH')) {
    $modx_base_path= '{%base_path%}';
    $modx_base_url= '{%base_url%}';
    define('MODX_BASE_PATH', $modx_base_path);
    define('MODX_BASE_URL', $modx_base_url);
}
if(defined('PHP_SAPI') && (PHP_SAPI == "cli" || PHP_SAPI == "embed")) {
    $isSecureRequest = false;
} else {
    $isSecureRequest = ((isset($_SERVER['HTTPS']) && !empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') || $_SERVER['SERVER_PORT'] == $https_port);
}
if (!defined('MODX_URL_SCHEME')) {
    $url_scheme=  $isSecureRequest ? 'https://' : 'http://';
    define('MODX_URL_SCHEME', $url_scheme);
}
if (!defined('MODX_HTTP_HOST')) {
    if(defined('PHP_SAPI') && (PHP_SAPI == "cli" || PHP_SAPI == "embed")) {
        $http_host='{%host%}';
        define('MODX_HTTP_HOST', $http_host);
    } else {
        $http_host= array_key_exists('HTTP_HOST', $_SERVER) ? htmlspecialchars($_SERVER['HTTP_HOST'], ENT_QUOTES) : '{%host%}';
        if ($_SERVER['SERVER_PORT'] != 80) {
            $http_host= str_replace(':' . $_SERVER['SERVER_PORT'], '', $http_host); // remove port from HTTP_HOST
        }
        $http_host .= ($_SERVER['SERVER_PORT'] == 80 || $isSecureRequest) ? '' : ':' . $_SERVER['SERVER_PORT'];
        define('MODX_HTTP_HOST', $http_host);
    }
}
if (!defined('MODX_SITE_URL')) {
    $site_url= $url_scheme . $http_host . MODX_BASE_URL;
    define('MODX_SITE_URL', $site_url);
}
if (!defined('MODX_ASSETS_PATH')) {
    $modx_assets_path= '{%assets_path%}';
    $modx_assets_url= '{%assets_url%}';
    define('MODX_ASSETS_PATH', $modx_assets_path);
    define('MODX_ASSETS_URL', $modx_assets_url);
}
if (!defined('MODX_LOG_LEVEL_FATAL')) {
    define('MODX_LOG_LEVEL_FATAL', 0);
    define('MODX_LOG_LEVEL_ERROR', 1);
    define('MODX_LOG_LEVEL_WARN', 2);
    define('MODX_LOG_LEVEL_INFO', 3);
    define('MODX_LOG_LEVEL_DEBUG', 4);
}
-----core_config-----*/