note 83679 rejected from function.ibase-connect by felipe

Note Submitter: thebestvk at hotmail dot com ---- Mr /Ms first of all, my english is not very good, so I say sorry about it. I would like to connect php with interbase. It is the first time I am working with php and interbase. I am working in Windows XP, apache 2.2.6, php 5.2.5 php info shows this information: interbase Firebird/InterBase Support dynamic Compile-time Client Library Version Interbase 6 Run-time Client Library Version Firebird 1.0/Interbase 6 Directive Local Value Master Value ibase.allow_persistent On On ibase.dateformat %Y-%m-%d %Y-%m-%d ibase.default_charset NULL NULL ibase.default_db NULL NULL ibase.default_password ******** no value ibase.default_user no value no value ibase.max_links Unlimited Unlimited ibase.max_persistent Unlimited Unlimited ibase.timeformat %H:%M:%S %H:%M:%S ibase.timestampformat %Y-%m-%d %H:%M:%S %Y-%m-%d %H:%M:%S and in php I wrote: if (ibase_connect('localhost:G:\\wamp\\bin\\BD_Interbase\\ogmasig.gdb', 'sysdba', 'masterkey')) and it shows this mistake error: Warning: ibase_connect() [function.ibase-connect]: bad parameters on attach or create database CHARACTER SET NULL is not defined in G:\wamp\www\OGMASIG\pruebaBD_interbase.php I do not find this error anywhere. why does it occurs? how can I solve it? thank you very much