Is the PHP ticket system free and preferably Web 2.0?

Question

PHP

Please tell me a free PHP script for organizing a ticket system on the site (people ask their question and get a ticket number, and the support answers). Not complicated, without unnecessary bells and whistles.
Requirements :
1) Free
2) PHP + MySQL
3) With a beautiful minimalistic interface (ideally ala Twitter Bootstrap)
4) It is desirable to have JQuery / Ajax so that everything works quickly without unnecessary reloads
5) Support for English (Russian is not required), multilingualism will be a plus

Answer 1

mantis is unequivocal, 4 is not only, but in my opinion this is the most optional for the ticket system.

Answer 2

The system is paid, but inexpensive, and seems to satisfy all other requests
codecanyon.net/item/responsive-bootstrap-support-ticket-system/3343447

Answer 3

Why PHP? Why on the site?
For noobs, I would implement a ticket system with automatic collection and registration of mail and give everyone a postal address.
Interfaces are not for noobs.

Answer 4

And I really like thebuggenie Fits all the boxes.

Answer 5

https://github.com/rustem-art/hd.rustem is quite an interesting project

Answer 6

Cloud version of ME SDP - that's the guru's choice ;)

Answer 7

if you need for Yii2, then here is a small developing solution
https://github.com/akiraz2/yii2-ticket-support