title: php install yaml extension
body: <p>I try to install yaml extension for PHP. <br>
  I follow this tutorial : <a href="https://github.com/LegendOfMCPE/LoM-CMS/wiki/How-to-Install-LibYAML" rel="nofollow noreferrer">https://github.com/LegendOfMCPE/LoM-CMS/wiki/How-to-Install-LibYAML</a></p>
  
  <p>I have already do: </p>
  
  <pre><code>sudo apt-get install php-pear libyaml-dev
  pecl install yaml
  </code></pre>
  
  <p>But I don't understand the end:</p>
  
  <pre><code>/etc/php5/apache2/php.ini
  extension=yaml.so
  </code></pre>
  
  <p>Can you explain me the last commands?</p>