[PHP] Open source portal systems???

I've got an order for the media portal. Thus, I'm looking for an open source portal systems. First that comes to my mind is PHP-Nuke, but I heared that it requires a powerful server and i'll have just a middle-level one. So, could someone knows another PHP-based open source portal systems? Thank yo

[PHP] Regular expression. What is wrong?

d the result is opposite to intended one. What is wrong in the following? "; } else { echo "not valid phone"; } if(ereg("^[+]?[0-9\-[:space:]\)\(]+$", $test_phone)) { echo "valid phone"; } else { echo "not valid ph