More importantly I was making the point that people rarely write websites "in Ruby" or "in Python", they write them in "Rails" or "Django". People often write

More importantly I was making the point that people rarely write websites "in Ruby" or "in Python", they write them in "Rails" or "Django". People often write websites "in PHP" and that is a big, heavy and sharp double edged sword: it is this flexibility that has contributed largely to PHPs terrible reputation amongst languages. The OP is looking to "take things more seriously" so that means developing PHP with a framework, hence it's not relevant to compare Python to Ruby to PHP - the language and it's syntax will have far less impact on the OPs experience than will the structure, idioms and deployment requirements of various frameworks written in each of those langauges.