Adding Two Numbers

There are three methods to add two numbers:

Adding in simple code in PHP
Adding in form in PHP
Adding without using arithmetic operator (+).

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:

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Adding Two Numbers

Adding in Simple Code

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Adding in Simple Code

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