stripe/stripe-php — pull request #110 by rp-eric (2014-11-05 18:40:08+00:00)
Title: stream_socket_client may return FALSE (and $errno may be NULL on HHVM)

FIX: on HHVM, stream_socket_client returns $errno of NULL on success.
FIX: stream_socket_client can return FALSE which indicates an error (see php.net/stream_socket_client).