How to generate PDF with crystal reports from php application

Hi

I have an (old) symfony 2.4 php application (dockerized), and I would like to use a rpt (without data) to generate a PDF by injecting data from my database. This php-generated PDF would then be sent by mail.

- Is that possible to do this without a IIS server ?

- Do I need a crystal reports server anyway ?

- Is that possible using only PHP5.6 ? PHP 7 ? nodeJS ? anything that exists as a docker ?

- What solution and architecture would you suggest ?

- What license do I need (does it depend on the count of PDF I would generate from a single rpt ?)

Thank you