- var_dump: documentation ( source)
- array_diff: documentation ( source)
<?php
function array_diff_b($array1, $array2) {
$diff = array_diff($array1, $array2);
return (empty($diff)) ? TRUE : FALSE;
}
$a = array ('v1', 'v3', 'v4');
$b = array ('v1', 'v2', 'v3', 'v4', 'v5');
$result = array_diff_b($a, $b);
var_dump($result);