Generate QR code image and pass it to view

[eluser]Fyodor[/eluser]
Hello
I am trying to generate QR code image in PHP and pass it to view. Is it possible?
E.g.:
I call php function through ajax:

Code:

url: base_url+"ajax_controller/"+phpMethodName,
     type: 'GET',
     dataType: 'json',
     data:{
      'meetingID':$('#meeting_ID').val(),
      'userID':$('#user_ID').val()      
     },

phpMethodName is

Code:

<?php
public function newParticipation(){
    $data=$this->input->get();
    //firstly check if user has been participated already
    if($this->meetings_model->checkParticipation($data['meetingID'], $data['userID'])==true){
     $result=false;
    }
    else{
     $result=array();
     //insert new entry into participant DB table
     $this->meetings_model->addParticipation($data['meetingID'], $data['userID']);
    
     //generate QR code-------------------
     $this->load->library('ciqrcode');
     $params['data']="somestring" //this is a string for QRcode
     //$qrimage=$this->ciqrcode->generate($params);

     // check again: data shoud be inserted in DB
     if($this->meetings_model->checkParticipation($data['meetingID'], $data['userID'])==true){
      $result['inserted']=true;
      $result['image']="";
     }
    }
    echo json_encode($result);
  
} //end function new participation

I used qr code library from this link https://github.com/dwisetiyadi/CodeIgniter-PHP-QR-Code
My idea was to write qrcode image into $result['image'] and pass it to view through ajax. But something is wrong, I am not able to write image into $result...


I don't want to create new file and save it on my server for each qr code generation.
Is it possible to generate qr code image on fly and use this image in my view after?

Or may be the best way is generate QR code image using jquery plugins, not on server side?

regards,
Fyodor