Use following steps to switch your server/hosting package PHP version using cPanel.
1. Login to your hosting cPanel
2. Locate the MultiPHP Manager tool in the Software section of your cPanel.
3. Click the checkbox for the domain(s) that you want to adjust.
4. From the drop-down menu labeled PHP version, select the PHP version that best suits your site code.
5. Click the blue Apply button to save the change.