The server host hasn't changed, its the same one that was working before the PHP upgrade. That is the error message I get when the host variable contains the :port#. If I remove the :port# from the host variable in the conf.ini file, then the error message is:
Warning: mysqli_connect(): (28000/1045): Access denied for user 'root'@'mywebserver' (using password: YES) in /DB/xataface/xf/db/drivers/mysqli.php on line 3
Warning: mysqli_error() expects exactly 1 parameter, 0 given in /DB/xataface/xf/db/drivers/mysqli.php on line 11
Fatal error: Uncaught Exception: Error connecting to the database: in /DB/xataface/Dataface/Application.php:605 Stack trace: #0 /DB/xataface/Dataface/Application.php(1078): Dataface_Application->Dataface_Application(Array) #1 /DB/xataface/public-api.php(58): Dataface_Application::getInstance(NULL) #2 /DB/index.php(6): df_init('...', 'xataface') #3 {main} thrown in /DB/xataface/Dataface/Application.php on line 605