mysql5 has no apache2 or php5 variants. Perhaps you meant to do this?
sudo port install -v php5 +apache2 +mysql5
But if you already have php5 installed with different variants, then you first need to uninstall (or just deactivate) the old php5, then build it anew with the options you now want.
dyld: Library not loaded: /opt/local/lib/libintl.3.dylib
Referenced from: /opt/local/bin/gawk
Reason: image not found
You are experiencing the issue everyone is experiencing after upgrading from gettext 0.14.x to 0.15. You must now rebuild all ports that built against gettext 0.14.x. This is likely to be quite a few ports.
See this recent message:
http://lists.macosforge.org/pipermail/macports-users/2006-October/000262.html