bouncingBall(300, 0.99, 1.5)
PHP Fatal error: Uncaught Error: Maximum function nesting level of '256' reached, aborting!

Very elegant and short. I didnt realise you could use $maze[$v] with array_search. I thought it could only be $maze without []. I will use this function a lot more now.

Thanks for the tip. I looked up in docs and you're right, without glue it would've been nicer))

glue is optional in this case.

return bindec(implode($arr));

Nice one ^^