How does the output_buffering function in PHP help prevent header errors?

When working with PHP, header errors can occur if headers are sent before any output is generated. This can lead to issues such as "headers already sent" errors. The output_buffering function in PHP helps prevent header errors by buffering the output before sending it to the browser, allowing you to set headers at any point in your code without encountering errors. 

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

// Set headers
header('Content-Type: text/html');

// Output content
echo 'Hello, world!';

// Flush the output buffer and send the content to the browser
ob_end_flush();
?>

Keywords

output_buffering PHP header errors prevention function

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