title: How do I append MYSQL JSON
body: <p>I have the following in my database when I run <strong>SELECT type FROM office;</strong></p>
  
  <pre><code>+--------------------------------------------------------+
  | type                                                   |
  +--------------------------------------------------------+
  | a:2:{i:0;s:16:"Shared Workspace";i:1;s:9:"Workshops";} |
  +--------------------------------------------------------+
  </code></pre>
  
  <p>How can I add an extra JSON value for another type of office.  Basically I'd like it to add the type "Private Offices".  So the value in my DB will then look like:</p>
  
  <pre><code>+-----------------------------------------------------------------------------------+
  | type                                                                              
  +-----------------------------------------------------------------------------------+
  | a:3:{i:0;s:16:"Shared Workspace";i:1;s:9:"Workshops";i:2;s:15:"Private Offices";} |
  +-----------------------------------------------------------------------------------+
  </code></pre>