3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo readfile("http://www.xhaus.com/headers"); //needs "Allow_url_include" enabled //OR echo include("http://www.xhaus.com/headers"); //needs "Allow_url_include" enabled //OR echo file_get_contents("http://www.xhaus.com/headers"); //OR echo stream_get_contents(fopen('http://www.xhaus.com/headers', "rb")); //you may use "r" instead of "rb" //needs "Allow_url_fopen" enabled ?>

preferences:
59.81 ms | 402 KiB | 5 Q