If you actually believe in your ideas and their ability to succeed you would pay the money upfront for a php programming and make it back and then some in the long run.
I've found people who look for JV's with programmers tend to not believe in their own abilities and their ideas enough to pay for someone to do the work, they would rather minimize the risk of losing money by getting someone to do it for free and if the idea pans out then pay them. Just my .02 and past experience.