3v4l.org

run code in 300+ PHP versions simultaneously
<?php [$a, $b] = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, 0); var_dump(stream_get_meta_data($a), stream_get_meta_data($b));
preferences:
49.89 ms | 402 KiB | 5 Q