connect mysql是出现的error msg (using perl-cgi)

nggs8411

我写了一个cgi script 来connect mysql database， 但出现了这样的error：

Global symbol "$host" requires explicit package name at login.cgi line 42.
Global symbol "$database" requires explicit package name at login.cgi line 43.
Global symbol "$user" requires explicit package name at login.cgi line 44.
Global symbol "$db" requires explicit package name at login.cgi line 47.
Global symbol "$host" requires explicit package name at login.cgi line 47.
Global symbol "$database" requires explicit package name at login.cgi line 47.
Global symbol "$user" requires explicit package name at login.cgi line 47.
Global symbol "$db" requires explicit package name at login.cgi line 48.
Global symbol "$database" requires explicit package name at login.cgi line 48.
Global symbol "$pid" requires explicit package name at login.cgi line 50.
Global symbol "$db" requires explicit package name at login.cgi line 50.
Global symbol "%hash" requires explicit package name at login.cgi line 53.
Global symbol "$pid" requires explicit package name at login.cgi line 53.
Global symbol "$password_in_db" requires explicit package name at login.cgi line 55.
Global symbol "%hash" requires explicit package name at login.cgi line 55.
Global symbol "$password_in_db" requires explicit package name at login.cgi line 58.
Execution of login.cgi aborted due to compilation errors.

请问有人能告诉我是什么问题，非常谢谢你们的帮助！