Calculator.php:
<?php
function square( $number )
{
$newNumber = $number * $number;
return
$newNumber;
}
function cube( $number )
{
$newNumber = $number * $number * $number;
return
$newNumber;
}
?>
<html>
<head>
<meta http-equiv="Content-Language" content="en-gb">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<link rel="stylesheet" type="text/css" href="calculator.css">
<title>Calculator</title>
</head>
<body>
<div align="center">
<center>
<form method="POST" action="calculator.php">
<p>To perform calculations such as squares, square roots, and
cubes you need only fill in the first number field!<br><br>
</p>
<table border="0" cellspacing="1" width="304" id="calculator" height="139">
<tr>
<td width="292" align="center" height="39">
<h3> Calulator</h3>
</td>
</tr>
<tr>
<td width="292" align="center" height="23">
<input type="text" name="this" size="10"><br> <input type="text" name="that" size="10"></td>
</tr>
<tr>
<td width="292" align="center" height="24">
<input type="submit" value="+" name="do">
<input type="submit" value="-" name="do">
<input type="submit" value="*" name="do">
<input type="submit" value="/" name="do"><br>
<input type="submit" value="^2" name="do">
<input type="submit" value="^3" name="do">
<input type="submit" value="SqRt" name="do">
</td>
</tr>
<?php
if ($do == "+"){
if (($_POST['this'] != "") && ($_POST['that'] != "")) {
$result = $_POST['this'] + $_POST['that'];
}
else {
$message = "<font color=\"red\">You did not fill in both fields!</font>";
$result = "N/A";
}
}
elseif ($do == "-"){
if (($_POST['this'] != "") && ($_POST['that'] != "")) {
$result = $_POST['this'] - $_POST['that'];
}
else {
$message = "<font color=\"red\">You did not fill in both fields!</font>";
$result = "N/A";
}
}
elseif ($do == "*"){
if (($_POST['this'] != "") && ($_POST['that'] != "")) {
$result = $_POST['this'] * $_POST['that'];
}
else {
$message = "<font color=\"red\">You did not fill in both fields!</font>";
$result = "N/A";
}
}
elseif ($do == "/"){
if (($_POST['this'] != "") && ($_POST['that'] != "")) {
$result = $_POST['this'] / $_POST['that'];
}
else {
$message = "<font color=\"red\">You did not fill in both fields!</font>";
$result = "N/A";
}
}
elseif ($do == "^2"){
if ($_POST['this'] != "") {
$result = square ( $_POST['this'] );
$that = "";
}
else {
$message = "<font color=\"red\">You did not fill in the first field!</font>";
$result = "N/A";
}
}
elseif ($do == "SqRt"){
if ($_POST['this'] != "") {
$result = sqrt($_POST['this']);
$that = "";
}
else {
$message = "<font color=\"red\">You did not fill in the first field!</font>";
$result = "N/A";
}
}
elseif ($do == "^3"){
if ($_POST['this'] != "") {
$result = cube ( $_POST['this'] );
$that = "";
}
else {
$message = "<font color=\"red\">You did not fill in the first field!</font>";
$result = "N/A";
}
}
?>
<tr>
<td width="292" align="center" height="19"><br><b>Result: <?php echo($result); ?><br><?php echo($message); ?></b></td>
</tr>
<tr>
<td width="292" align="center" height="19"><br>Powered by <a href="http://www.godfatheruk.com">GodfatherUK</a></td>
</tr>
</table>
</form>
</center>
</div>
</body>
</html>
Other Calculators Scripts: