What are the potential pitfalls of using ob_start() as a solution to header modification issues?

When working with PHP, there may be instances where you need to modify headers after content has already been sent to the browser. This can lead to errors like "headers already sent" if not handled properly. One solution to this problem is to use the ob_start() function, which allows you to buffer output and modify headers before they are sent. 

<?php
ob_start();

// Your code here

header('Location: https://www.example.com');
exit;

ob_end_flush();
?>

Keywords

ob_start header modification output buffering PHP pitfalls

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