I was trying to host my website with ZEIT - Now and the deployment was succesfull, but I can't access it with my url (https://site-bmwuvcgqf.now.sh) because he only downloads my source code and doesn't show the website.
Now v2 requires a now.json file to tell it to use a PHP Builder
https://zeit.co/docs/v2/deployments/official-builders/php-now-php/
Add one to your project and deploy again