You can solve this problem with a suitable frame, but there is a greater temptation to mix HTML and PHP into one file. Programmers have worked in PHP to make it fairly stable and PHP laravel web development easier for developers to create web applications with this technology. They have spent time working on bug fixes for different versions of PHP and have made it fairly stable.
There are many developers who use PHP to develop web applications. As a result, there is sufficient community support for PHP, ready to assist you with any questions. If you have access to a complex code solution on your iPad, it will not work as well as on a game machine.