PHP in_array() / array_search() odd behaviour

Question

I have found some odd behaviour while I was using the PHP function in_array(). I have an array like this:

$arr = [TRUE, \"some string\", \"somet         


        

Answer 1

You are right, the boolean can indeed cause this. Set the strict flag in the in_array function, this way also the type of the element is checked (basically the same as using ===):

if (in_array("username", $results, true)) // do something
if (in_array("password", $results, true)) // do something
if (in_array("birthday", $results, true)) // do something