Picture resize function when uploading in CodeIgniter not working - php

Question

I made a function on the CodeIgniter framework so users can upload pictures of products to a product page. The thing is I want pictures to be resized to the width and height I want it to be. Since I added the image lib resize function in my upload function nothing is working anymore.
This is my upload function:
public function upload() {
$this->load->library('upload');
if ( ! $this->upload->do_upload('userfile')) {
$error = array('error' => $this->upload->display_errors());
$this->load->view('product_form', $error);
} else {
$file_data = $this->upload->data();
$this->load->library('image_lib');
foreach ($results as $row) {
$config['image_library'] = 'gd2';
$config['source_image'] = './upload/' . $file_data["file_name"];
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = TRUE;
$config['width'] = 75;
$config['height'] = 50;
$this->image_lib->clear();
$this->image_lib->initialize($config);
$this->image_lib->resize();
}
$this->db->insert('products', array(
'product_foto' => $file_data['file_name'],
'product_naam' => $this->input->post('product_naam'),
'product_beschrijving' => $this->input->post('product_beschrijving'),
'product_categorie' => $this->input->post('product_categorie'),
'ophaal_plaats' => $this->input->post('ophaal_plaats'),
'date_created' => date('Y-m-d'),
'date_updated' => date('Y-m-d')
));
$data['img'] = base_url() . '/upload/' . $file_data['file_name'];
header('location:https://kadokado-ferran10.c9users.io/Product/');
}
What am I doing wrong?

Answer 1

It works for me :
if(!empty($_FILES['image_field']['name']))
{
$config['upload_path'] = './image_folder';
$config['allowed_types'] = 'jpg|png';
$config['max_size'] = '262144';
$config['overwrite'] = FALSE;
$this->load->library('upload',$config);
if(!$this->upload->do_upload('image_field'))
{
echo "Not Upload";
echo $this->upload->display_errors();
// $this->session->set_flashdata('error','<div class="alert alert-warning">Something went wrong...try again...</div>');
//redirect('Controller/function_name');
}
else
{
$image_data = $this->upload->data();
$config1['image_library'] = 'gd2';
$config1['source_image'] = './image_folder/'.$image_data['file_name'];
$config1['maintain_ratio'] = TRUE;
$config1['quality'] = '50%';
$config1['width'] = 50;
$config1['height'] = 50;
$this->load->library('image_lib', $config1);
$this->image_lib->resize();
if ( ! $this->image_lib->resize())
{
echo $this->image_lib->display_errors();
}
echo $image_data['file_name'];
exit;
// save to database
}
}