Installing php on Mac OS X 10.2 or above is very easy. First download the package from here

Mount the .dmg file and double click the package file. Follow the installation instructions.

PHP should now be up and running. You can test it by dropping a file named test.php into your Sites folder in your home directory. Into that file, write this line:

Now open up http://127.0.0.1/~ your_username /test.php in your web browser. You should see a status table with information about the PHP module.

Links
http://www.entropy.ch/software/macosx/php/

Added: December 02, 2003