I created a application that takes the form information and creates a pdf then emails me the pdf as an attachment and it also has a file upload field that attaches the image with it. Now I am wanting to add multiple upload fields and create a package so instead of having multiple attachments it creates a zip file with all the stuff inside it. I would also like it to be named as one of the fields that the user enters. Does anyone know where I can find some tutorials on how to do this or a script I could buy?
since you got the functionality of 1 document
I would work on multiple file upload system
once this is working, than look zip creation with php
In all actuality, u can do it in either precedence (zip first, than multiple file upload)
http://php.net/manual/en/book.zip.php should get you going on creating zips 
but remember test first with example files, before adding it to your script