How to know if my site will work on server PHP 5.6?

[betterlead]

Hi friends

Simple question, but hard to answer?

Akeeba started announcing some time ago, "I have an obsolete PHP version. My site is running on PHP 5.4.45... yada, yada,,, I should update to PHP 5.6 or later".

I asked the server management team if they could do the upgrade on my VPS and they sure could, but they asked: Will your site run well on PHP 5.6?
Good question. So,,, I have postponed the upgrade until I know it's safe. But how can I tell? Who can tell?

Any ideas or suggestions?

Regards
/Betterlead (Dodo)

[Jumbo!]

Joomla 3.5.1 and VirtueMart 3.0.17 both are very much compatible to PHP 5.6, even PHP 7.

[GJC Web Design]

Most of mine are on php7 now and there is a noticeable speed increase on busy sites