What are the potential pitfalls of using the header function for URL redirection in PHP?

Using the header function for URL redirection in PHP can lead to potential pitfalls such as headers already sent errors if there is any output before the header function is called. To avoid this issue, it is recommended to use the ob_start() function at the beginning of the script to buffer the output and prevent any headers from being sent prematurely. 

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

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

Keywords

header function URL redirection potential pitfalls security vulnerability HTTP headers

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