For example:

You have two groups of reporters, one group are users (access level reporter) from outside the company and the other group are testers in your one company (updaters). If a reporter (who is not so trustworthy) reports a bug, this bug should set to "new". But if an updater reports a bug, then the bug should submitted with e.g. "acknowledged".

Maybe this way: $g_bug_submit_status = array( new => REPORTER, acknowledged => UPDATER, confirmed => DEVELOPER);