Calculator | Best calculator | #Calculator | Tech
Calculator
<?php
if(isset($_POST['submit'])){
$number1 = $_POST['number1'];
$number2 = $_POST['number2'];
$operator = $_POST['submit'];
if ($number1 == ''){
echo "<script>alert('please enter value first')</script>";
exit();
}
if ($number2 == ''){
echo "<script>alert('please enter value first')</script>";
exit();
}
if($operator == 'ADD'){
$result = $number1 + $number2;
echo $result;
}
if($operator == 'SUBTRACT'){
$result = $number1 - $number2;
echo $result;
}
if($operator == 'MULTIPLY'){
$result = $number1 * $number2;
echo $result;
}
if($operator == 'DIVIDE'){
$result = $number1 / $number2;
echo $result;
}
}
?>
<!DOCTYPE html>
<html>
<title></title>
<head></head>
<body>
<form action="newcalculater.php" method="POST">
<input type="text" name="number1" placeholder="Enter First Number">
<input type="text" name="number2" placeholder="Enter Second Number">
<br><br>
<input type="submit" name="submit" value="ADD">
<input type="submit" name="submit" value="SUBTRACT">
<input type="submit" name="submit" value="MULTIPLY">
<input type="submit" name="submit" value="DIVIDE">
</form>
</body>
</html>
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