How can output buffering be used to prevent the "headers already sent" error in PHP?

When PHP sends output to the browser, it sends headers first, followed by the content. If any content is sent before headers, it will result in the "headers already sent" error. To prevent this error, you can use output buffering in PHP. Output buffering allows you to capture all output before sending it to the browser, ensuring that headers are sent first without any interference. 

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

// Your PHP code goes here

ob_end_flush(); // Send the output to the browser
?>

Keywords

output buffering headers already sent error prevention ob_start ob_end_flush

Related Questions