If you have PHP installed and you've loaded up 10.2.4 you've probably noticed that PHP no longer works. By editing httpd.conf in the following way I was able to get PHP back and running. Disclaimer: I don't really know what I'm doing here, I'm just a guy armed with BBEdit and some vague notions. Follow my lead at your peril. That said:

1. Open httpd.conf in the text editor of your choice.
2. Find the following lines and uncomment them:
   #LoadModule php4_module libexec/httpd/libphp4.so
#AddModule mod_php4.c
3. Find this line:
   Include /private/etc/httpd/users
4. And add this line right after it:
   AddType application/x-httpd-php .php
5. Save.
6. Open your System Preferences, go to Sharing and restart your web server.

PHP should be running again. At least, it is for me ;-) Discuss