Early Hints

FrankenPHP natively supports the 103 Early Hints status code. Using Early Hints can improve the load time of your web pages by 30%.

php

<?php

header('Link: </style.css>; rel=preload; as=style');
headers_send(103);

// your slow algorithms and SQL queries 🤪

echo <<<'HTML'
<!DOCTYPE html>
<title>Hello FrankenPHP</title>
<link rel="stylesheet" href="style.css">
HTML;

Early Hints are supported both by the normal and the worker modes.

Sending HTTP 103 Early Hints from PHP with FrankenPHP

Early Hints