PHP 5.6 (Current stable)
curl -s http://php-osx.liip.ch/install.sh | bash -s 5.6
PHP 5.5 (Old stable)
curl -s http://php-osx.liip.ch/install.sh | bash -s 5.5
PHP 5.4 (Older stable)
curl -s http://php-osx.liip.ch/install.sh | bash -s 5.4
PHP 5.3 (End of life)
curl -s http://php-osx.liip.ch/install.sh | bash -s 5.3
http://php-osx.liip.ch/