PHP CMS to rival Plone

[mark l sanders]

Carrying on earlier threads: does anyone use a CMS (due to server/pocket constraints, MUST be: PHP & Open Source) whose feature set can rival Plone?
It must produce accessible standards-based code; I don't mind a steep learning curve - my problem is that I don't want to start the ascent until I've got some recommendations from people who actually use one of these things.
Although I want the usual (customisation and external user management are important) I would LIKE the CMS to be able to talk to a variety of authorisation protocols - LDAP would be pretty high on the list - if I need to implement a separate authorisation procedure, the Intranet just won't work.
Plone can do all of this (with the help of open source extensions) - is there a PHP version that'll do the same?

thanks

[coopster]

Looks like no takers here, mark_l_sanders. You may end up being the authority before your search is over ;)

[Timotheos]

I haven't used it but I've heard good things about Typo3

[mincklerstraat]

There's been a ldap module out there for postnuke for some time, and I do believe mambo siteserver was planning on getting one. Here on ww, there are a lot more people enthusiastic with mambo than postnuke; I've only used postnuke and never really used mambo so couldn't say.

[outrun]

Typo3 is great and with an extension you can have LDAP Authentication, I have heard this many times that it has a steep learning curve but this is not the case, and you can have multiple sites using one installation, multilanguage support is great and the REAL URL extension makes great search engine friendly urls.

Hope that didnt sound too preachy.

regards,
Mark