Online PHP editor | output for vstSl

<?php require 'server.inc'; function do_test($version, $connection) { $options = array() 'http' => array() 'protocol_version' => $version, ) ); if ($connection) { $options['http']['header'] = "Connection: $connection"; } $ctx = stream_context_create($options); $responses = ["data://text/plain,HTTP/$version 204 No Content\r\n\r\n"]; $pid = http_server('tcp://127.0.0.1:12342', $responses, $output); $fd = fopen('http://127.0.0.1:12342/', 'rb', false, $ctx); fseek($output, 0, SEEK_SET); echo stream_get_contents($output); http_server_kill($pid); } echo "HTTP/1.0, default behaviour:\n"; do_test('1.0', null); echo "HTTP/1.0, connection: close:\n"; do_test('1.0', 'close'); echo "HTTP/1.0, connection: keep-alive:\n"; do_test('1.0', 'keep-alive'); echo "HTTP/1.1, default behaviour:\n"; do_test('1.1', null); echo "HTTP/1.1, connection: close:\n"; do_test('1.1', 'close'); echo "HTTP/1.1, connection: keep-alive:\n"; do_test('1.1', 'keep-alive'); ?>