Would you rather return it -1 or something else? You are gonna need a comparison in any case because you can get 0 offset. Return type doesn't matter as much because php has dynamic typing. Pretend it is Option[Int] if you will.
I would also like to use this moment to go on a tangent with my unwilling audience that, not wasting any remote opportunity to badmouth php, or any other language for that matter, just for its standard library or trying to not break as much legacy code as possible, is bad form. Sure language syntax itself may suck, semantics may suck, I am always up for a good PL flamewar. If you want to bash the library, don't blame the language itself for the poor choices of the library.
cryptbe, I would like to apologise in advance and humbly request you to not take this personally.
I would also like to use this moment to go on a tangent with my unwilling audience that, not wasting any remote opportunity to badmouth php, or any other language for that matter, just for its standard library or trying to not break as much legacy code as possible, is bad form. Sure language syntax itself may suck, semantics may suck, I am always up for a good PL flamewar. If you want to bash the library, don't blame the language itself for the poor choices of the library.
cryptbe, I would like to apologise in advance and humbly request you to not take this personally.