title: pdo drivers shows no value in linux
body: <p><a href="http://i.stack.imgur.com/57iDc.png" rel="nofollow">this is screenshot</a>  i have install php5.6 with the following command:
    - sudo apt-get install -y php5.6
     and also install the php cli with this command : sudo apt-get install php5-cli.</p>
  
  <p>then,</p>
  
  <p>I have added following line to php.ini file for extenstion:
  extension=pdo.so and extension=pdo_mysql.so</p>
  
  <p>and given the extension path : 
  extension = /usr/lib/php/20131226/pdo_mysql.so</p>
  
  <p>and use command : sudo apt-get install php-mysql</p>
  
  <p>but still shows the pdo drivers no value when running phpinfo()</p>
  
  <p>so, how to solve? </p>