How can the PHP script be modified to ensure proper indentation and readability, as recommended in the forum thread?

The PHP script can be modified to ensure proper indentation and readability by following coding standards such as PSR-12. This includes using consistent indentation (typically 4 spaces) for blocks of code, aligning assignment operators, and properly spacing out control structures and function definitions.

<?php

// Original PHP script with improper indentation
function calculateSum($a, $b) {
$c = $a + $b;
return $c;
}

// Modified PHP script with proper indentation
function calculateSum($a, $b) {
    $c = $a + $b;
    return $c;
}