Add Two Numbers In PHP

In this article, we will discuss how to add two numbers in PHP. PHP is a popular scripting language especially suited to web development where calculations such as addition are quite frequently used.

Code snippet: Addition in PHP

The following example of PHP code will demonstrate a simple addition of two numbers.

<?php
$num1 = 5;
$num2 = 10;

$sum = $num1 + $num2;

echo "The sum of $num1 and $num2 is: $sum";
?>

You can see from the above that adding two numbers in PHP is a straightforward operation. This is a basic demonstration but the concept lies at the core of many more complex operations in PHP.

Code Explanation for Addition in PHP

Now let’s dissect the PHP code step by step to understand how the addition operation is done.

1. The PHP opening tag <?php is used to start writing the PHP code.

2. We declare two variables $num1 and $num2 and assign the values 5 and 10 respectively. In PHP, variable names start with a dollar sign $.

3. We declare another variable $sum to hold the result of the addition. We add $num1 and $num2 using the addition operator + and we assign the result to the variable $sum.

4. Finally, we use the echo statement, which is used in PHP to output one or more strings, to output “The sum of $num1 and $num2 is: $sum”.

That concludes the steps for adding two numbers in PHP. With a basic understanding of variables and arithmetic operations in PHP, you can perform a lot of calculations and make your website more dynamic and interactive.