The PHP version can be changed on a per site basis from within cPanel.
Log in to cPanel using the cPanel login URL, username and password provided to you.
When logged in, click on Select PHP Version in the Software section:
Here you can choose from any of the available PHP versions.
You can also tick the PHP modules you want to enable/disable for the website.
Clicking the button Set as current will save the new PHP version.
The PHP version can be upgraded or downgraded at anytime.
