title: Best way to internationalize simple PHP website
body: <p>I have to develop a pretty simple php website so I don't need framework. 
  But it's must support multi language (EN/FR/CHINESE).
  I have looked for php built in system and I found two ways :</p>
  
  <ul>
  <li>intl module from php5.3 (<a href="http://php.net/manual/fr/book.intl.php" rel="noreferrer">http://php.net/manual/fr/book.intl.php</a>)</li>
  <li>gettext (<a href="http://php.net/manual/fr/book.gettext.php" rel="noreferrer">http://php.net/manual/fr/book.gettext.php</a>)</li>
  </ul>
  
  <p>I have no experience in i18n without framework, so any advices about what's the <strong>simplest way</strong> to support multi language ?</p>
  
  <p>At end I just need a function that search translation into file (one file by language).
  EQ : 
  <code>trans('hello');</code></p>
  
  <p>=> en.yaml (yaml or not, it's an example)</p>
  
  <pre><code>hello: "Hello world!"
  </code></pre>
  
  <p>=> fr.yaml</p>
  
  <pre><code>hello: "Bonjour tout le monde !"
  </code></pre>
  
  <p>And if possible I prefer Pure PHP implementations</p>