MsSQL for Ubuntu

gistfile1.txt

Get dependencies
$ sudo apt-get install php5-sybase freetds-dev php5-dev -y

Move to user hoem directory
$ cd ~

Get php5 source
$ apt-get source php5

Move into the source code directory (substitute x.x with apropritate version number)
$ cd php5-x.x.x/ext/mssql

Phpize, configure and build extension
$ phpize  
$ ./configure --with-mssql
$ sudo make

Navigate to extension
$ cd modules

Copy to php5 module directory (path might be different per configuration)
$ cp mssql.so /usr/lib/php5/20090626

Edit php.ini
$ sudo vim /etc/php5/apache2/php.ini
Add "extension = mssql.so" (without the quotes) on a new line.
(use i-key to enter Insert-mode, paste, press Esc-key and save with :wq)

Restart Apache
$ sudo service apache2 restart