which apache / php things to install?

[bob self]

I just installed FreeBSD 5.4-RELEASE and am installing a few 
applications. I need apache with php, but I see many php-related 
packages (with portupgrade -v php5-\*). So then I tried portupgrade -v 
php5, but now it wants to know whether I want to use apache2 instead of 
apache 1.3. I've been using 1.3 on another machine with no problems. Is 
2 now ok to use? I saw in /usr/ports that there is apache2, apache20, 
apache21. Which one of these should I install if I use apache2? What 
about the other php installation questions (debug and zend multibyte 
support)?

thanks,
bob