closures

closures.php

<?php

function odd($number)
{
    return $number % 2 === 0;
}

$numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
$odds = array_filter($numbers, 'odd');
$even = array_filter($numbers, function($number) {
   return $number % 2 > 0; 
});