✔ Nullable types

<?php
function say(?string $msg) {
    if ($msg) {
        echo $msg;
    }
}

function findElephpant( $name ) : ?Elephpant
{
    if ( ( $elephpant = findElephpantInDB( $name ) ) == FALSE )
    {
        return NULL;
    }

    return $elephpant;
}
?>
= null implies ? type hint