How can the issue of output being sent before a header redirect be prevented in PHP?

Issue: The issue of output being sent before a header redirect in PHP can be prevented by ensuring that no output is sent to the browser before calling the header() function to perform a redirect. This can be achieved by placing the header() function at the beginning of the script, before any HTML or whitespace. 

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

// Perform any necessary checks or calculations here

// Redirect to a new page
header("Location: newpage.php");
exit();
ob_end_flush(); // Flush the output buffer
?>

Keywords

output buffering ob_start ob_end_flush header redirect

Related Questions