chromium/third_party/blink/web_tests/http/tests/cookies/resources/setArraycookies.php

<?php 
// Setting Array of cookies
setcookie("setArraycookie[three]", "cookiethree");
setcookie("setArraycookie[two]", "cookietwo");
setcookie("setArraycookie[one]", "cookieone");
header('Location: setArraycookies-result.php');
?>