How can removing extra spaces or characters outside of PHP tags help resolve PHP errors related to session handling?

Removing extra spaces or characters outside of PHP tags can help resolve PHP errors related to session handling by ensuring that there are no outputs sent to the browser before session_start() is called. This is important because session_start() must be called before any output is sent to the browser in order to properly start a session. By removing any extraneous characters or spaces outside of PHP tags, you can prevent any unintentional output that could interfere with session handling.

<?php
ob_start(); // Start output buffering
session_start(); // Start the session
// Your PHP code here
ob_end_flush(); // Flush the output buffer
?>