find the area of a square in php

To find the area of a square in PHP, you need to know the length of one side of the square. Once you have the side length, you can simply multiply it by itself to get the area. Here's the code to do this:

main.php
<?php
$side = 5; // the length of one side of the square
$area = $side * $side; // multiply the side length by itself to get the area
echo "The area of the square is: " . $area; // output the area
?>
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In this example, we're assuming that the length of one side of the square is 5 units. You can adjust the value of the $side variable to match your specific needs. Similarly, you can customize the output message to display the area in a way that makes sense for your application.