Processing form data in PHP is significantly simpler than most other Web programming languages. This simplicity and ease of use makes it possible to do some fairly complex things with forms ...

The HTML language provides a range of input types you can use in your forms. For example, to create a checklist, you can include multiple checkbox elements in the form together with descriptive text.

We know you can use different forms of markup types, like microdata, RDFa, or JSON-LD on the same page. Google also allows you to use multiple types of structured data on a page.