PHP 5.3 - Check compatibility / Raise requirements

[syntaxerror]

According to some forum posts, it seems to be some compatibility issues with PHP 5.3, and thus this should be checked.

Examples:
https://arastta.org/forum/fatalerrorexception-in-csrf-php-line-53
https://arastta.org/forum/error-manufacturer-and-category

Or it's maybe better to just raise the requirements:
https://arastta.org/docs/requirements

[dakanji]

Most, including me, will not visit the links posted as the site ssl certificate is invalid

[syntaxerror]

Most, would probably have visited them long time ago, or some other day than the one where it was expired. Also most caring would probably have something ese than naging to post on issues. ;)