In this post, we helps you find the longest side of the box in php.

1. Code:

 <?php 
    function getLongestSideOfTheBox($width, $height, $length){
		$dim = array($width, $height, $length);
		sort($dim);
		return $dim[2];
	}
    echo getLongestSideOfTheBox(12, 3, 18);
    ?> 

2. Example:

Input:

input: 12, 3, 8

Output:

Output:
12