How to parse web form input fields?

Question

PHP

Hello!
The task is as follows: you need to parse a third-party site in order to obtain information about the information that is entered in various fields in the forms.
That is, at the output I would like to get at least something like a list of forms and fields in them (plus, the field type, its value, labels, hints, masks, etc. - everything that describes the input data) in order to understand : what data can be entered by the user on this site.
There is one caveat: in the modern web, forms can be generated on the client side - it is also desirable to take them into account when parsing.
Are there ready-made solutions or technologies for such a task?
Solutions are preferred in PHP or JavaScript, but any helpful suggestions would be greatly appreciated.

Answer 1

phantomjs + casperjs