此函数是该函数的别名： imap_lsub().
chris at brenden dot com (2000-01-15 22:21:08)
imap_listsubscribed() has been changed (or atleast I think has been) in php4b4 or the current CVS version.
The new function call is imap_lsub() it works the same as imap_listsubscribed()...