Test if string could be boolean PHP

Question

I\'m getting a string from a $_GET and I want to test if it could be a boolean, before I use it for a part of a mysql query. Is there a better way of doing it than:

Answer 1

No you got it, there isn't anything more you can do, you got all possible values that would normally be considered as true or false and you're doing the comparison the right way, you COULD optimize it using an IN_ARRAY maybe, but even so, i find this version quite good already.