facebook/hhvm — pull request #1982 by huzhiguang (2014-03-04 12:51:01+00:00)
Title:  fix mysqli_real_connect flag default value is 0!

mysqli_real_connect flag default value is 0 don't null,this default value is wrong,throw fatal:

HipHop Fatal error: Argument 7 passed to mysqli::real_connect() must be an instance of int, null given

fix this flag value is 0,and run right.