using php within the contact form

I want to use php to create the list of items within a checkbox type. To see what I’m talking about, you can go to designergirlmedia.com/faith/contact.html (this is my static site that I am converting to WordPress). I want the checkboxes to list everything on the ministries page which I made using Custom Post Types UI. I created a php function to create the list but I am unsure how to apply it to the contact form.

I want the list created in php to go here: [checkbox info id:info “List Item 1” “List Item 2” “List Item 3” “List Item 4”].

Is there a way to incorporate php into this? Or even a better way to create this?

If all else fails, I can simply type it all out, but that’s defeating my purpose for using WordPress.

Thanks