How well paid are PHP jobs compared to Rails? I know the UK has abysmal salaries for developers (especially outside London) but the average salary for a PHP developer [1] is in a class of its own, much less than Ruby [2].

[1] http://www.payscale.com/research/UK/Job=PHP_Developer/Salary

[2] http://www.payscale.com/research/UK/Job=Ruby_Software_Develo...