VersionPress\Storages\Serialization\IniSerializer::preserveNumbers PHP Method

    private static function preserveNumbers($iniString)
    {
        // https://regex101.com/r/pH5hE9/3
        $re = "/= -?\\d+(?:\\.\\d+)?\\r?\\n/m";
        return preg_replace_callback($re, function ($m) {
            return str_replace('= ', '= ' . self::$numberMarker, $m[0]);
        }, $iniString);
    }