3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (!isset($_POST["password"])) { $target = htmlspecialchars($_SERVER['PHP_SELF'] ?? ""); $form = '<html><head><title>testing</title></head><body><form action="'.$target.'" method="post"><input type="password" name="password"></form></body></html>'; echo($form); } else { if ($_POST["password"] === "TestersAndDevs0nly") { session_start(); $_SESSION["logged"] = true; } } ?>
Output for 8.3.5 - 8.3.27, 8.4.9 - 8.4.14
<html><head><title>testing</title></head><body><form action="/in/jlrdA" method="post"><input type="password" name="password"></form></body></html>
preferences:
53.84 ms | 406 KiB | 5 Q