incrementing radio button names and ids using php

Hi,

I am using Codeigniter.
For every questionname fetched from the database, I am trying to attach a few radio buttons with a fixed values and a text area for each questionname in the same page(it would look like a questionnaire). I am able to get the values from database and display with the radio buttons and textarea like how I want it.

But the problem is that in my view for every questionname, radio buttons with same name and id are getting attached and hence I am not able to choose buttons explicitly for each button. I tried using for loop to increment the values but that is not the right approach. It would be great if someone can help me with this.

Controller:

public function viewvariant($variantid){
 $this->load->model('variant_model');
    $data['results']=$this->variant_model->getvariant($variantid);
     $this->load->view('viewvariant_view',$data);    
}

Model:      
function getvariant($variantid)
      {
          
$this->db->select('questions.questionid,questions.questionname');
   $this->db->from('questions');
   $this->db->join('variant_question', 'questions.questionid = variant_question.questionid');
   $this->db->where('variant_question.variantid',$variantid);
   $records = $this->db->get('');
 return $records->result();
      }

View:

<div class="form-group">
                 
                 <label>Questions for that variant(the methods for the task gets loaded as radio buttons)</label>
                 
               <?php
             
foreach ($results as $row) {

    ?>    
   
    <input type="text" name="questions" id="questions" value="<?php $row->questionid; ?>"/><?php echo $row->questionname; ?><br>
      <div class="radio">
      <label style="font-weight:bold"><input type="radio" id="radio1" name="optradio">no</label>
      <label style="font-weight:bold"><input type="radio" id="radio1" name="optradio">probably no</label>
      <label style="font-weight:bold"><input type="radio" id="radio1" name="optradio">unknown</label>
       <label style="font-weight:bold"><input type="radio" id="radio1" name="optradio">probably yes</label>
      <label style="font-weight:bold"><input type="radio" id="radio1" name="optradio">yes</label>
    </div>
    <textarea name="question1_text" rows="3" cols="73"></textarea>
<?php } ?>
 </div>