title: How to use registerMetatag in Yii 2
body: <p>i'm trying to render meta tag on page header by use:
  In my View:</p>
  
  <pre><code>&lt;?php
  $this-&gt;registerMetaTag(['name' =&gt; 'keywords', 'content' =&gt; 'yii, framework, php']);
  ?&gt;
  </code></pre>
  
  <p>and in my layout i put this code in head tag position:</p>
  
  <pre><code>&lt;?php $this-&gt;head()?&gt;
  </code></pre>
  
  <p>But it does not working. Anyone who have the same problem, can help me solve this problem. Thank you !!</p>