How can the issue of "Cannot modify header information" be resolved in PHP when trying to redirect users to a different page?

When encountering the "Cannot modify header information" issue in PHP, it is typically caused by attempting to send headers after output has already been sent to the browser. To resolve this, make sure that no output is sent before calling functions like header() to redirect users to a different page. To ensure this, you can use ob_start() to buffer the output and ob_end_flush() to flush the output before redirecting. 

<?php
ob_start(); // Start output buffering

// Your PHP code here

ob_end_flush(); // Flush the output

header("Location: newpage.php"); // Redirect users to a different page
exit(); // Ensure no further code is executed after the redirect
?>

Keywords

header redirection ob_start ob_end_flush output buffering

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