I think you may have answered your own question. If most of the potential clients are using PHP, and you want to service those clients, then it makes sense to l

I think you may have answered your own question. If most of the potential clients are using PHP, and you want to service those clients, then it makes sense to learn PHP. I understand where you are coming from re the "projects from zero" comment but that's mostly wishful thinking. PHP is, in many ways, an ugly language but a lot of people have found it a useful language and a lot of people still do.