I have pasted code below that how to create tutorial in php.
Soon I will post video tutorial on my YouTube channel or on my site.
First of all to learn and create calculator by yourself first copy below code and save as index.php.
Istall XAMP
Go to htdocs folder
and paste your file index.php
start your xamp controll panel
then go to your browser and type local host
you will see many files which are in your htdocs folder
type in your browser like this
//locallhost/index.php
or when you type locallhost in your browser. Then your browser will show you list of files which are in your htdocs folder.
<!DOCTYPE Html>
<html>
<head>
<title></title>
</head>
<body>
<form>
<input type = "text" name = "num1" placeholder = "Number 1" ><br>
<input type = "text" name = "num2" placeholder = "Number 2" ><br>
<select name= "operator">
<option>NONE</option>
<option>ADD</option>
<option>SUBTRACTION</option>
<option>Multiplication</option>
<option>Modulus</option>
<option>Division</option>
<option>Power</option>
</select>
<button type="submit"name="submit" value="submit">Calculate</button><br>
</form>
<p>The answer is</p>
<?php
if(isset($_GET['submit'])){
$number1 = $_GET['num1'];
$number2 = $_GET['num2'];
$opr = $_GET['operator'];
switch($opr){
case 'NONE':
echo "Please select your operator";
break;
case 'ADD':
echo $number1 + $number2;
break;
case 'SUBTRACTION':
echo $number1-$number2;
break;
case'Multiplication':
echo $number1*$number2;
break;
case 'Modulus':
echo $number1% $number2;
break;
case 'Division':
echo $number1/$number2;
break;
case 'Power':
echo $number1**$number2;
default:
echo "Please Try again";
}
}
?>
</body>
</html>