What role does the ob_start() and ob_get_contents() functions play in the provided solution and how do they impact the output?

The issue is related to output buffering in PHP, which allows you to capture the output of a script before sending it to the browser. In this case, we want to capture the output of a function instead of immediately displaying it. The ob_start() function starts output buffering, while ob_get_contents() retrieves the contents of the buffer without flushing it. This allows us to manipulate or store the output before sending it to the browser.

<?php
ob_start(); // Start output buffering

// Function or code that generates output
echo "Hello, World!";

$output = ob_get_contents(); // Get the contents of the output buffer
ob_end_clean(); // Clean (erase) the output buffer and turn off output buffering

// Manipulate or store the output
echo "Modified Output: " . $output;
?>