Cant get photo to upload. - Printable Version

PHP Code:

public function drinkadvert()
    {
    $this->load->library('image_lib');
    $this->load->helper(array('form','file'));
    $this->load->library('upload');

        $lcuser = $this->session->userdata('user_name');
        $drink = $this->input->post('dri');
        $drinkphoto = $this->input->post('drinkphoto');

        {
        $this->load->view('affairs/drinkadvert');
        }

        $config['upload_path'] = 'mem/'.$lcuser.'/adverts/'.$drink;
        $config['allowed_types'] = 'png|jpg|jpeg';

        $this->upload->initialize($config);

        if($this->upload->do_upload("$drinkphoto"))

        {
        $img = $this->upload->data();
        $drinkphoto = 'mem/'.$lcuser.'/adverts/'.$drink/$img['file_name']; //The problem may lie in the file_name but I dont know much about that.
        }
    }

public function upload_drinkphoto($str)
    {
    $allowed_mime_type_arr = array('image/png','image/jpg','image/jpeg');

    if(isset($_FILES['drinkphoto']['name']) && $_FILES['drinkphoto']['name']!="")
        {
            $mime = get_mime_by_extension($_FILES['drinkphoto']['name']);

        if(in_array($mime, $allowed_mime_type_arr))
            {
            return TRUE;
            }
            else
            {
            $this->form_validation->set_message('upload_drinkphoto', 'Upload in png/jpg/jpeg format');
            return FALSE;
            }
        }
    }

PHP Code:

<?php
defined('BASEPATH') OR exit('No direct script access allowed');
?>
<body>

<?php echo form_open_multipart('drinkadvert'); ?>

<style type="text/css"> .drinkpic { position: fixed; width: 28%; right: 8%; top: 34%; background-color: White; } </style>
    <div class="drinkpic"> <input type="file" name="drinkphoto" id="drinkphoto" style="width: 100%; height: 5mm"; > </div>

<style type="text/css"> .sub { position: fixed; width: 5%; right: 19%; text-align: center; top: 83.5%; } </style>
    <div class="sub"> <input type="submit" value="Submit"></form></div>