#135 authentification is broken with php 5

[Paul Jackson]

am completely unable to use authentification with last
upgrade of php to 5.5.1 and MySQL 5.0 in fact the home
page for phplib returns
Warning: mysql_connect(): Unknown MySQL Server Host
'mysql' (0) in
/home/groups/p/ph/phplib/php/db_mysql.inc on line 75
Database error: pconnect(mysql, phplib, $Password) failed.
MySQL Error: ()
Session halted.