Adding Two Numbers

There are three methods to add two numbers:

Adding in Simple Code

Addition of two numbers 15 and 30 is shown here.

Example:


<?php  
$x=15;  
$y=30;  
$z=$x+$y;  
echo "Sum: ",$z;  
?>

Output

Adding in Form

Two numbers can be added by passing input value in the form.

Example:


<
<html>  
<body>  
<form method="post">  
    Enter First Number:  
    <input type="number" name="number1" /><br><br>  
    Enter Second Number:  
    <input type="number" name="number2" /><br><br>  
    <input type="submit" name="submit" value="Add">  
</form>  
<?php  
    if(isset($_POST['submit']))  
    {  
        $number1 = $_POST['number1'];  
        $number2 = $_POST['number2'];  
        $sum =  $number1 + $number2;     
        echo "The sum of $number1 and $number2 is: ".$sum;   
    }  
?>  
</body>  
</html>
?>

Output

Adding in Simple Code

Two numbers can be added by passing input value in the form but without using (+) operator.


<body>  
<form>  
    Enter First Number:  
    <input type="number" name="number1" /><br><br>  
    Enter Second Number:  
    <input type="number" name="number2" /><br><br>  
    <input type="submit" name="submit" value="Add">  
</form>  
</body>  
<?php      
    @$number1 = $_GET['number1'];   
    @$number2 = $_GET['number2'];   
    for ($i = 1; $i <= $number2; $i++)     
    {      
        $number1++;      
    }      
    echo "Sum of $number1 and $number2 is=" . $number2;  
?>

Output