How can "headers already sent" errors be resolved when using header-location in PHP?

When using header('Location: ') in PHP, the "headers already sent" error occurs when there is output sent to the browser before the header is set. To resolve this issue, make sure that there is no whitespace or output before the header() function is called. Additionally, you can use ob_start() at the beginning of your script to buffer the output and prevent any headers from being sent prematurely. 

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

header('Location: newpage.php');
exit();
ob_end_flush();
?>

Keywords

headers sent errors header-location PHP

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