How can one troubleshoot issues with the header function not working in PHP?

If the header function is not working in PHP, it could be due to output being sent to the browser before the header function is called. To solve this issue, make sure to call the header function before any output is sent to the browser, including any whitespace or HTML tags. 

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

// Call the header function before any output is sent
header("Location: https://www.example.com");

ob_end_flush(); // Flush output buffer
?>

Keywords

header function troubleshooting PHP HTTP headers error detection

Related Questions