<!DOCTYPE html>
<head>
<title>Simple Calculator Program in PHP - Tutorials
Class</title>
</head>
<?php
$first_num = $_POST['first_num'];
$second_num = $_POST['second_num'];
$operator = $_POST['operator'];
$result = '';
if (is_numeric($first_num) && is_numeric($second_num)) {
switch ($operator) {
case "Add":
$result = $first_num + $second_num; break;
case "Subtract":
$result = $first_num - $second_num; break;
case "Multiply":
$result = $first_num * $second_num; break;
case "Divide":
$result = $first_num / $second_num;
}
}
?>
<body>
<div id="page-wrap">
<h1>PHP - Simple Calculator Program</h1>
<form action="" method="post"
id="quiz-form">
<p>
<input type="number" name="first_num"
id="first_num" required="required" value="<?php
echo $first_num; ?>" /> <b>First Number</b>
</p>
<p>
<input type="number" name="second_num"
id="second_num" required="required" value="<?php
echo $second_num; ?>" /> <b>Second Number</b>
</p>
<p>
<input readonly="readonly" name="result"
value="<?php echo $result; ?>"> <b>Result</b>
</p>
<input type="submit" name="operator"
value="Add" />
<input type="submit" name="operator"
value="Subtract" />
<input type="submit" name="operator"
value="Multiply" />
<input type="submit" name="operator"
value="Divide" />
</form>
</div>
</body>
</html>
Hello, my name is G Krishna. I'm Creating this blog for the students who are beginners.
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