$sql = 'SELECT * FROM items WHERE (i_name LIKE ='%$query%') OR (i_code LIKE '%$query%')';

Warning: mysqli_stmt_bind_param(): Number of variables doesn't match number of parameters in prepared statement in

if(isset($_REQUEST['term'])){
     // Prepare a select statement
     $sql = 'SELECT * FROM items WHERE (i_name LIKE ?) OR (i_code LIKE ?)';

     if($stmt = mysqli_prepare($ds, $sql)){
         // Bind variables to the prepared statement as parameters
         mysqli_stmt_bind_param($stmt, "s", $param_term);

         // Set parameters
         $param_term = $_REQUEST['term'] . '%';

         // Attempt to execute the prepared statement
         if(mysqli_stmt_execute($stmt)){
             $result = mysqli_stmt_get_result($stmt);

             // Check number of rows in the result set
             if(mysqli_num_rows($result) > 0){
                 // Fetch result rows as an associative array
                echo '<table class="table table-striped"><tbody><tr>';
                 while($row = mysqli_fetch_array($result, MYSQLI_ASSOC)){

                    echo '<td width="70%">' . $row["i_name"] . '</td><td width="30%"><a href="edit-cat.php?cat='.$row['iid'].'"><i class="fa fa-pencil" aria-hidden="true"></i> Edit</a></td>';
                 }
                echo '</tr></tbody></table>';
             } else{
                 echo "<p>No matches found</p>";
             }
         } else{
             echo "ERROR: Could not able to execute $sql. " . mysqli_error($ds);
         }
     }

     // Close statement
     mysqli_stmt_close($stmt);
 }

 // close connection
 mysqli_close($ds);
 ?>

$term = "%{$_REQUEST['term']}%";
mysqli_stmt_bind_param($stmt, "ss", $term, $term);