$input = array(4,71, 72, 73, 74, 66,50,51,49,52,53,54,55,57,59,68,69,70,75,76,77,78,79,80);
$inputShare= array (72,80,59,4,71);
$ct = count ($input);
$cts = count($inputShare);
for ($i=0 ; $i <= $ct ; $i++ ) {
for ($k=0 ; $k <= $cts ; $k++) {
if ($inputShare[$k] == $input[$i]) {
unset($input[$i]);
break 1;
}
}
}