function both()
{
global $r;
return array(area($r), perimeter($r));
}
<html lang = "en">
<head>
<title>Circle Functions</title>
</head>
<body>
<?php
$r = 5;
$h = 3;
$k = -2;
include "circle.php";
echo "Area : " . area() . "<br />";
echo "Perimieter: " . perimeter(10) . "<br /><hr />";
list($myArea, $myPerim) = both();
echo "Both: area = " . $myArea . " and perimeter= " . $myPerim . "<br /><hr />";
$h = 3;
$k = -2;
echo "Circle with center ({$h}, {$k}): The piont (-2,-2) is " . point(-2, -2) . "<br />";
echo "Circle with center (3,-2) : The point (1,-1) is " . point(1, -1) . "<br />";
?>
</body>
</html>
<p><input type="submit" value="CALCULATE" name="calc" /></p>
</form>
<?php
if (isset($_POST['calc'])) {
$length = $_POST['length'];
$width = $_POST['width'];
echo "length:" . $length . "<br><br>";
echo "width:" . $width . "<br><br>";
function perimeter($length, $width)
{
return 2 * ($length + $width);
}
$perimeter = perimeter($length, $width);
echo "perimeter:" . $perimeter . "<br>", "<br>";
function area($length, $width)
{
return $length * $width;
}
$area = area($length, $width);
echo "area:" . $area;
}
?>
</body>
