How To Change PHP Version In WordPress
Step1. Login to z.com account, https://cloud.z.com/mm/signin/
Step2. Click the “WordPress” Menu
Step3. Click your WordPress Server

Step4. Click the “WordPress Site” under the Name Tag from the WordPress List

Step5. Click “Website Information[Live Area]“
Step6. Click “Edit” button in PHP Version

Step7. Choose “PHP Version” that you want to change
Step8. Click “Yes” button

Thank you!!!