Remove values in a flat indexed array if found in another flat array

Question

I would like to filter an array.

$a = ['a', 'b', 'c', 'd', 'e'];
$b = ['c', 'd'];

$a will be filtered by values in array $b and the result should be:

['a', 'b', 'e']

Answer 1

Try array_diff();

PHP Documentation: http://php.net/manual/en/function.array-diff.php

Answer 2

$result = array_diff($a, $b)