How can headers already sent error be avoided when using header(Location: ...) in PHP, as discussed in the forum thread?

When using the header(Location: ...) function in PHP, the "headers already sent" error can be avoided by ensuring that no output is sent to the browser before calling the header function. This error occurs when PHP tries to send headers after content has already been sent, which can happen if there is whitespace or HTML tags before the header function call. To avoid this error, make sure to place the header function call at the beginning of the PHP script before any output is sent. If necessary, you can use output buffering to capture any output before sending headers. 

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

// Your PHP code here

header("Location: https://www.example.com"); // Redirect to the specified location

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

Keywords

headers header function output buffering ob_start header already sent error

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