title: How to retrieve data from MySQL array and make checkbox checked in list
body: <p>I have a form in which I display numbers of company with checkbox. User checked these company and save this in a database table. Now I want to make an update form where I want that when data retrieve from database the checkbox is already checked in list which is checked by user while entering data.</p>
  
  <p>Basically i want that when user fetches his stored results from database, he should be able to see which checkbox's he ticked earlier.</p>
  
  <p>Screenshot of values which is saved by user</p>
  
  <p>[![enter image description here][1]][1]</p>
  
  <p>List of that values which is save in <code>select_fi</code> columns </p>
  
  <p>[![enter image description here][2]][2]</p>