Re copy certificate issuance code

Hello, the idea of ​​this project is to re-copy the certificate issuance code that is already on the web, it is a program in php that uses fpdf.  For the generation of the certificates for various webinars that have been made with which the user download their certificate typed their email and the idea is to replicate this in some subdomains of each webinar that has been made and add to the download environment a little identity of  According to the webinar as the name and a header of the same, I appreciate the collaboration, it is something that I must deliver on Tuesday maximum on Wednesday, I would like to know if this can be placed in wordpress on any page to optimize time ... Thanks