Understanding Root Directory, Testing PHP Engine and Installing PHP Extensions on Ubuntu

In my previous post, Installing LAMP Stack on Ubuntu and Debian in Just 3 Steps, you’ve learned how to install LAMP Stack on Ubuntu.

In this post we’ll:

  1. learn what is Root Directory
  2. check whether PHP5 Engine is working correctly or not.
  3. learn about and install some useful PHP5 Extension Modules such as mcrypt.

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