What potential issues can arise when using header(location: $url) in PHP scripts?

Potential issues that can arise when using header(location: $url) in PHP scripts include headers already being sent, leading to the redirection not working as expected. To solve this issue, make sure to call header() before any output is sent to the browser. 

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

// Your PHP code here

header("Location: $url"); // Redirect to the specified URL

ob_end_flush(); // Flush the output buffer
?>

Keywords

header function redirection URL HTTP headers server-side redirects

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