How to compare array values from database in PHP

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PHP

MySQL

database

This is my table

id | desc
1 | sample,try,same,code
2 | more,code,help,PHP

This is my code
I get 1 data from table
I put each values to array
How do I compare it to another table and print.

if(isset($_GET['Desc']))

  {
    function validate($data)
      {
        $data = trim($data);
        $data = stripslashes($data);
        $data = htmlspecialchars($data);
        return $data;
      }

      $desc = validate($_GET['Desc']);
      $seperate = explode(' ', $desc);
  }

What I have tried:

I tried

$sql = "SELECT * FROM trytbl WHERE description IN ('" . implode("','", $seperate) . "')";
  $result = mysqli_query($db,$sql);

But it display id number 1 only