
Second, even you may not used it on your daily projects you may learn a few things in programming field knowing programming PHP.
Third, even you use it a lot in this period you can always drop it if it doesn't fit your needs. You can replace it with other programming language that fits your needs and your programming taste. That will probably need a lot of work if you'll need to replace all the currenty used code with what you need but you can replace it.
So keep programming if you like it as much as I do.