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Apache/2.4.7 (Ubuntu) Server at localhost Port 80

sudo apt-get install apache2 php5

sudo apt-get install php5-dev php5-cli

sudo apt-get install php-pear

pear version

// PEAR Version: 1.9.4
// PHP Version: 5.5.9-1ubuntu4.5
// Zend Engine Version: 2.5.0
// Running on: Linux my-computer 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64

pecl version // as above

sudo pecl install mongo // this installs the mongo driver

(I was prompted with something containing [no] and I pressed enter)

cd /etc/php5/apache2

sudo vi php.ini

at end of file I added:  extension=mongo.so

sudo /etc/init.d/apache2 restart

me@my-computer ~ $ /etc/init.d/apache2 status
 * apache2 is running

/var:
owner (root)  create and delete files
group (root):  access files
others:  access files

/var/www:
owner (root)  create and delete files
group (root):  access files
others:  access files

/var/www/html:
owner (me - Me)
folder access:  create and delete files
file access:  ---

group (me):
folder access:  none
file access:  ---

others:
folder access:  none
file access:  ---