title: How to install PHP intl extension in Ubuntu 14.04
body: <p>I have a hard time to find exact method to install PHP intl extension in <strong>Ubuntu 14.04</strong>.</p>
  
  <p>I tried with <code>sudo apt-get install php5-intl</code> but displays error <code>Unable to locate package</code>.</p>
  
  <p>I really need this extension for Zend Framework 2 , because of above missing extension I am getting error like this</p>
  
  <p><strong>ERROR:</strong> <code>Zend\I18n\Validator component requires the intl PHP extension</code></p>
  
  <p>I am using PHP 5.5.9.</p>
  
  <p>How can I install <code>PHP-intl</code> extension in a correct way ?</p>