Resultat:
") {
print $startBox;
}
function sluttBox($sluttBox = "
") {
print $sluttBox;
}
function errorBox($errorBox = "Only numberz!!") {
print "" . $errorBox . "
";
}
// check if the input contains numbers
if (is_numeric($_REQUEST['firstnumber'])) {
$firstnumber = $_REQUEST['firstnumber'];
}
elseif ($_REQUEST['firstnumber'] == "") {
errorBox("Plz enter numberz!!");
exit();
}
else {
errorBox();
exit();
}
if (is_numeric($_REQUEST['secondnumber'])) {
$secondnumber = $_REQUEST['secondnumber'];
}
elseif ($_REQUEST['secondnumber'] == "") {
errorBox("Plz enter numberz!!");
exit();
}
else {
errorBox();
exit();
}
if (is_numeric($_REQUEST['squareroot'])) {
$squareroot = $_REQUEST['squareroot'];
}
elseif ($_REQUEST['squareroot'] == "") {
errorBox("Plz enter numberz!!");
exit();
}
else {
errorBox();
exit();
}
// calculate $firstnumber and $secondnumber and print the result
switch ($type) {
case "Pluss":
$resultat = $firstnumber + $secondnumber;
startBox();
echo "$firstnumber + $secondnumber = $resultat";
sluttBox();
break;
case "Minus":
$resultat = $firstnumber - $secondnumber;
startBox();
echo "$firstnumber - $secondnumber = $resultat";
sluttBox();
break;
case "Dele":
$resultat = $firstnumber / $secondnumber;
startBox();
echo "$firstnumber / $secondnumber = $resultat";
sluttBox();
break;
case "Gange":
$resultat = $firstnumber * $secondnumber;
startBox();
echo "$firstnumber x $secondnumber = $resultat";
sluttBox();
break;
case "Kvadratrot":
$resultat = sqrt($squareroot);
echo "$resultat";
break;
}
?>