You can create a quick file that you can run by typing in the URL, to see what version of PHP is being run.
This has been helpful when I need a quick answer and the ISP is slow on updating their posted stats

1- Create a text file and name it “php-checker.php”
(no quotations)

2- Add this bit of code to it

<?php phpinfo() ?>

3- SAVE and upload to your Root directory

4– Now type in the URL to this file
Example: http://mysite/php-checker.php

5– That’s it – it should tell you on the top of the page!