What are the best practices for activating output buffering in PHP to manage header redirects effectively?

When dealing with header redirects in PHP, it is important to activate output buffering to prevent any output being sent to the browser before the redirect header is set. This can help avoid "headers already sent" errors. To activate output buffering, you can use the ob_start() function at the beginning of your script. 

<?php
ob_start();

// Your PHP code here

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

ob_end_flush();
?>

Keywords

output buffering ob_start ob_end_flush header redirect

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