How do I upgrade PHP in Mac OS X?

Question

I feel this is an awfully obtuse question to ask, but strangely, this problem is poorly documented.

I would like to upgrade PHP, but there are several problems:

Answer 1

You can use curl to update php version.

curl -s http://php-osx.liip.ch/install.sh | bash -s 7.3

Last Step:

export PATH=/usr/local/php5/bin:$PATH

Check the upgraded version

php -v