- array_udiff: documentation ( source)
<?php
function callback($a, $b) {
echo "\$a = $a; \$b= $b; ";
echo "<br>\n";
return 0;
}
$array1 = array("first_0", "first_1", "first_2", "first_3", "first_4" );
$array2 = array("second_0", "second_1", "second_2", "second_3", "second_4");
$result = array_udiff($array1, $array2, "callback");