help needed

I inherited a good sized antique website that was written in PHP, or that is what I understand. I am not a computer person. There are several features that I would like to save or at least be able to transfer the functionality to the new website. The new website will be on Weebly and will be a mere shadow of what the original site is today. The hobbyist that wrote the current site a long time ago has passed on and I have not been able to find anyone that even has a clue about PHP. If this email finds anyone who can at least look at it and make a suggestion, please email me. If we can save these specific features and transfer them into Weebly, I would expect to pay for the expertise. thank you for taking your time to read my plea for help, I hope this finds someone who remembers PHP. Judith Rose Monaghan