What are the implications of the "Cannot modify header information" warning in PHP and how can it be addressed in the context of header redirection?

The "Cannot modify header information" warning in PHP occurs when there is an attempt to set a header after content has already been sent to the browser. To address this issue in the context of header redirection, you can use the `ob_start()` function to buffer the output and prevent any content from being sent before the headers are set. 

<?php
ob_start();
// Your PHP code here

// Perform header redirection
header("Location: https://www.example.com");
exit();
ob_end_flush();
?>

Keywords

header information warning PHP header redirection address

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