How to Update the PHP version on the Plesk Server?
Step1. Login to the Plesk server, https://123.456.78.9:8443/
Step2. Go to “Tools & Settings” and click “Updates” under Plesk
Step3. Click “Add/Remove Components” to update and install the PHP version
Step4. Go to the “Plesk Hosting Features“
Select the “PHP” Version that you want to install
Step5. And then, Click “Continue“
Now, you can install the PHP Version successfully.