";
function addiereFloat(float $a, float $b):float
{
$c = $a + $b;
return $c;
}
echo addiereFloat(1.9, 2.9) . "
";
echo addiereFloat(1, 2) . "
";
// echo addiereFloat("1.9", 2.9) . "
";
echo "Typ bool: ";
function oder(bool $a, bool $b):bool
{
$c = $a || $b;
return $c;
}
echo oder(true, false) . "
";
// echo oder(1, "abc") . "
";
echo "Typ string: ";
function verkette(string $a, string $b):string
{
$c = $a . $b;
return $c;
}
echo verkette("Hallo", "Welt") . "
";
// echo verkette(5, 8.2) . "
";
echo "Vordefinierte Funktionen: ";
echo mb_strlen("Hallo") . "
";
// echo mb_strlen(123) . "
";
echo "Ende des Programms";
?>