title: PHP Concatenate Bootstrap Glyphicons
body: <p>I have a php concatenate problem for echoing Bootstrap Glyphicon.</p>
  
  <p>The HTML for Bootstrap Glyphicon is: </p>
  
  <pre><code>&lt;span class="glyphicon glyphicon-map-marker" aria-hidden="true"&gt;&lt;/span&gt;
  </code></pre>
  
  <p>I want to concatenate for PHP echo so I tried this, but doesn't work: </p>
  
  <pre><code>echo "&lt;p&gt;" . "&lt;span class=" . "glyphicon glyphicon-map-marker" . "aria-hidden=" . "true" . "&gt;" . "&lt;/span&gt;" . $row['id'] . "&lt;/p&gt;";
  </code></pre>