What potential issue is the user experiencing with the header("Location: ") function in PHP?

The potential issue the user may be experiencing with the header("Location: ") function in PHP is that it must be called before any output is sent to the browser. If there is any output, even just a single whitespace character, before calling header("Location: "), PHP will throw an error. To solve this issue, make sure to call header("Location: ") before any HTML, whitespace, or other output in your PHP script. 

<?php
ob_start(); // Start output buffering
// Your PHP code here
header("Location: https://www.example.com"); // Redirect to the specified URL
ob_end_flush(); // Flush output buffer and send headers
exit; // Stop further execution
?>

Keywords

header function Location redirection HTTP error

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