title: How to get structed result using nested set in MySQL and PHP?
body: <p>There is no limitation on the depth.</p>
  
  <p>How to get the structured branch or even entire tree?</p>
  
  <p>The definition is from here: <a href="http://mikehillyer.com/articles/managing-hierarchical-data-in-mysql/" rel="noreferrer">Managing Hierarchical Data in MySQL</a></p>