Great question! Since I'm not sure which hosting plan you're using for your GoCentral website, it's hard to provide you with a complete answer. My suggestion is to check out our page with all of the plans and determine if your current plan offers PHP https://www.godaddy.com/hosting/web-hosting. If you want to change your plan, please contact our Customer Care team at https://www.godaddy.com/contact-us.aspx. Take care!
Am on the go central website builder not sure if i can increase the hosting speed to php7 as not known if the go central website builder is made in same code ?