still can't login using imap_open to a gmail account :(

[Rene Veerman <rene.veerman.netherlands@xxxxxxxxx>]

i'm using imap_open ('{imap.gmail.com:993/imap/ssl/no-validate-cert}INBOX', 'userid@xxxxxxxxx', 'pass')

i've also tried :

imap_open ('{imap.gmail.com:993/imap/ssl/no-validate-cert}', 'userid@xxxxxxxxx', 'pass')

imap_open ('{imap.gmail.com:993/imap/ssl}', 'userid@xxxxxxxxx', 'pass')

imap_open ('{imap.gmail.com:993/imap/ssl}INBOX', 'userid@xxxxxxxxx', 'pass')

all with 'allow access for less secure apps' turned on in the google account pages.

what am i doing wrong here?...