Question

When I want to check if something is in the array and get the key back, I use the array_search() function.

Why is it when I compare the function to be exactly equal to true (=== true) it returns false, and when I compare it to not be exactly equal to false (!== false) it returns true?

<?php
    if(array_search($value, $array) === true)
    {
        // Fails
    }

    if(array_search($value, $array) !== false)
    {
        // Succeeds
    }
?>

Thanks in advance.

Answer 1

array_search returns you needle when a match is found. it returns false only when match is not found. This is why only the opposite works in your case.

Returns the key for needle if it is found in the array, FALSE
otherwise.