$sayilar = explode(',', $_POST["sayilar"]);
$cift = array();
$tek = array();
for ($i = 0; $i < count($sayilar); $i++) {
if ($sayilar[$i] % 2 == 0) {
array_push($cift, $sayilar[$i]);
} else {
array_push($tek, $sayilar[$i]);
}
}
print_r($cift);
echo "<br>";
print_r($tek);