Warning: Undefined array key "soUser" in /home/.sites/56/site967/web/chat/index.php on line 28

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/.sites/56/site967/web/chat/include/class_connection.php5:44
Stack trace:
#0 /home/.sites/56/site967/web/chat/include/class_user.php5(48): connection->startConnectionToDB()
#1 /home/.sites/56/site967/web/chat/index.php(28): user->__construct(NULL)
#2 {main}
  thrown in /home/.sites/56/site967/web/chat/include/class_connection.php5 on line 44