title: how to make simple marker biostall CodeIgniter-Google-Maps-V3-API-Library
body: <p>my controller file:</p>
  
  <pre><code>$this-&gt;load-&gt;library('googlemaps');
  
  $config['center'] = '37.4419, -122.1419';
  $config['zoom'] = 'auto';
  $this-&gt;googlemaps-&gt;initialize($config);
  
  $marker = array();
  $marker['position'] = '37.429, -122.1419';
  $this-&gt;googlemaps-&gt;add_marker($marker);
  $data['map'] = $this-&gt;googlemaps-&gt;create_map();
  
  $this-&gt;load-&gt;view('view_file', $data);
  </code></pre>
  
  <p>my view file:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;&lt;?php echo $map['js']; ?&gt;&lt;/head&gt;
  &lt;body&gt;&lt;?php echo $map['html']; ?&gt;&lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>and i have CodeIgniter-Google-Maps-V3-API-Library in my folder libraries project.</p>
  
  <p>my source file : <a href="https://github.com/BIOSTALL/CodeIgniter-Google-Maps-V3-API-Library" rel="nofollow noreferrer">https://github.com/BIOSTALL/CodeIgniter-Google-Maps-V3-API-Library</a></p>
  
  <p>and this the result :
  <a href="https://i.stack.imgur.com/tLAXE.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tLAXE.jpg" alt="enter image description here"></a></p>
  
  <p>i ask to google but, she suggest me to make API_KEY in <a href="https://developers.google.com/maps/documentation/javascript/get-api-key" rel="nofollow noreferrer">https://developers.google.com/maps/documentation/javascript/get-api-key</a></p>
  
  <p>now, i have api key, but how to install it? </p>