How to add or remove (if already exists) a key=>value pair to an array?

Question

I would like to do this with a single function.

I have a key=>value pair:

14=>1

I have an array containing many such pairs:

array(15=>2, 16=>7, 4=>9)

I want a function which will add the key=>value pair to the array in case it is not already there but it will remove it from the array if it is already there.

I would like to have a single function for this.

Answer 1

function updateArray($array, $findKey, $findValue) {

    foreach($array as $key => $value) {

        if ($key == $findKey AND $value == $findValue) {
            unset($array[$key]);
            return $array;
        }
    }

    $array[$findKey] = $findValue;
    return $array;

}