PHP Version 5.3.8 - Parse error: syntax error, unexpected '['

[zirnipa]

Tested our SDK with PHP Version 5.3.8:
It looks like this PHP version does not support the used array declaration

public function token($paymentType, array $additional = [])
public function createTokenPayment($pType, array $additional = [])
public function acceptPayment($type, $tid, $payment = [], $additional = [])

Parse error: syntax error, unexpected '[' in C:\xampp\htdocs\sdk\src\Mpay24.php on line 189

I think we should only support the supported versions: http://php.net/supported-versions.php

[stefanpolzer]

You right this annotation is only supported in PHP 5.4+.... I also agree that only the new PHP Version should be supported, this old PHP versions are also a kind of security risk.
PHP 5.3 is EOL since 14 Aug 2014 and I assume that now one that use mpay24-php 4.0.0+ is using this old PHP version otherwise there would be a lot of complains already.

[chesio]

The SDK as it is requires PHP 5.6 at least, see: https://github.com/mpay24/mpay24-php/blob/master/src/Mpay24Confirmation.php#L42-L61

const CONFIRMATION_PROPERTIES = [
    'OPERATION'      => 'CONFIRMATION',
    'TID'            => '.{0,32}',
    ...

From PHP manual:

As of PHP 5.6 it is possible to define array constant using const keywords [...]

[stefanpolzer]

@zirnipa I assume this on is now obsolete or do we need a fix on the older version 4.x for PHP 5.3.8?