1<?php
2
3/**
4 * Bootstrapping File for phpseclib
5 *
6 * composer isn't a requirement for phpseclib 2.0 but this file isn't really required
7 * either. it's a bonus for those using composer but if you're not phpseclib will
8 * still work
9 *
10 * @license http://www.opensource.org/licenses/mit-license.html MIT License
11 */
12
13if (extension_loaded('mbstring')) {
14    // 2 - MB_OVERLOAD_STRING
15    // mbstring.func_overload is deprecated in php 7.2 and removed in php 8.0.
16    if (version_compare(PHP_VERSION, '8.0.0') < 0 && ini_get('mbstring.func_overload') & 2) {
17        throw new UnexpectedValueException(
18            'Overloading of string functions using mbstring.func_overload ' .
19            'is not supported by phpseclib.'
20        );
21    }
22}
23