How can PHP session permissions be properly configured to avoid the "Cannot send session cookie - headers already sent" error?

When encountering the "Cannot send session cookie - headers already sent" error in PHP, it is typically caused by output being sent to the browser before session_start() is called. To avoid this error, you should ensure that session_start() is called before any output is sent to the browser, such as HTML, whitespace, or even error messages. 

<?php
// Ensure no output is sent before session_start()
session_start();

// Your PHP code here
?>

Keywords

PHP session permissions headers error

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