Show HN: a flowchart to help non-technical founders choose their tech stack
thectonetwork.com
thectonetwork.com
However, this post was aimed at non-technical people. If you don't know much about tech, and try to hire PHP programmers, the quality of talent will be very variable. If you stick with Ruby and Python, your chance of finding someone decent is much higher.
Likewise, in almost any market, the price of an hour of Ruby/Python coding is going to be greater than an hour of PHP coding.