title: Make unique ID using Laravel
body: <p>I want to generate a unique id in Laravel.</p>
  
  <p>EX: <code>PO-12010001</code></p>
  
  <ul>
  <li>PO = product,</li>
  <li>12 = the month,</li>
  <li>01 = the year,</li>
  <li>0001 = ID of product.</li>
  </ul>
  
  <p>I have tried googling and the answer is using UUID but could not understand.</p>