Codeigniter Upload featured image and multiple images at the same time - php

Question

I have modified the code to use a foreach loop, now I can access the files names, and the print_r is printing the files names in an array like this:
Array ( [0] => Uconn.png [1] => UW_Medicine.png [2] => Yale.png ) Axis.png
but I am still getting the following error:
A PHP Error was encountered
Severity: Notice
Message: Array to string conversion
and a databse error:
Error Number: 1054
Unknown column 'Array' in 'field list'
INSERT INTO `yacht_slider` (`yacht_slide_id`, `slide`) VALUES (87, Array)
I just don't know how should I pass the looped files inside the model to upload.
I am trying to upload a featured image in one input, and multiple images in another input at the same time, I tried many ways and methods to do this, but I always end with an error, mostly Array to string conversion error.
the featured image is stored in one database table and the multiple images are stored in another table.
My current code:
HTML:
<div class="form-group">
<label for="" class="control-label">Image</label>
<input type="file" class="form-control" name="featured">
</div>
<div class="form-group">
<label for="" class="control-label">Slider</label>
<input type="file" class="form-control" name="userfile[]" multiple>
</div>
Model:
public function create_yacht($yacht_img, $slider){
$slug = url_title($this->input->post('title'));
$data = array(
'title' => $this->input->post('title'),
'slug' => $slug,
'img' => $yacht_img,
'city' => $this->input->post('city'),
'category' => $this->input->post('category'),
'price' => $this->input->post('price'),
'description' => $this->input->post('description')
);
$this->db->insert('yachts', $data);
$insert_id = $this->db->insert_id();
$data_4 = array(
'yacht_slide_id' => $insert_id,
'slide' => $slider
);
$this->db->insert('yacht_slider', $data_4);
}
Controller:
public function create_yacht(){
$data['title'] = 'Create';
$data['categories'] = $this->category_model->get_categories();
$this->form_validation->set_rules('title', 'Title', 'required');
$this->form_validation->set_rules('city', 'City', 'required');
if($this->form_validation->run() === FALSE){
$this->load->view('templates/admin_header');
$this->load->view('admin/create_yacht', $data);
$this->load->view('templates/admin_footer');
}else{
$config['upload_path'] = './assets/images';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '2048';
$this->load->library('upload', $config);
$featured = 'featured';
if (!$this->upload->do_upload($featured)) {
$errors = array('errors' => $this->upload->display_errors());
$yacht_img = 'https://via.placeholder.com/1920x1080';
}else{
$data = array('upload_data' => $this->upload->data());
$yacht_img = $_FILES['featured']['name'];
}
foreach ($_FILES['userfile']['name'] as $name) {
$this->upload->initialize($config);
$this->upload->do_upload($name);
$data = array('upload_data' => $this->upload->data());
$slider = $_FILES['userfile']['name'];
}
print_r($slider);
print_r($yacht_img);
$this->yacht_model->create_yacht($yacht_img, $slider);
// redirect('admin');
}
}

Answer 1

I've cleaned up your code a bit and put in some error reporting so users won't be befuddled when an error occurs.
Controller:
public function create_yacht() {
$data['title'] = 'Create';
$data['categories'] = $this->category_model->get_categories();
$this->form_validation->set_rules('title', 'Title', 'required');
$this->form_validation->set_rules('city', 'City', 'required');
if ($this->form_validation->run() === FALSE) {
$this->load->view('templates/admin_header');
$this->load->view('admin/create_yacht', $data);
$this->load->view('templates/admin_footer');
} else {
$this->load->library('upload');
$upload_path = './testupload/';
// just in case, make path if it doesn't exist
// if we can't die
if (!is_dir($upload_path) && #mkdir($upload_path, DIR_WRITE_MODE) == false) {
show_error('Could not make path!');
}
$config['upload_path'] = $upload_path;
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '2048';
$config['file_ext_tolower'] = true;
//$config['encrypt_name'] = true; // might be a good idea
$this->upload->initialize($config);
// featured image
if (!$this->upload->do_upload('featured')) {
show_error($this->upload->display_errors());
}
$yacht_img = $this->upload->data('file_name');
// multi images
$slider_images = array();
$multi_files = $_FILES['userfile'];
if (!empty($multi_files['name'][0])) { // if slider images are required remove this if
$multi_count = count($_FILES['userfile']['name']);
for ($i = 0; $i < $multi_count; $i++) {
$_FILES['userfile']['name'] = $multi_files['name'][$i];
$_FILES['userfile']['type'] = $multi_files['type'][$i];
$_FILES['userfile']['tmp_name'] = $multi_files['tmp_name'][$i];
$_FILES['userfile']['error'] = $multi_files['error'][$i];
$_FILES['userfile']['size'] = $multi_files['size'][$i];
if (!$this->upload->do_upload()) {
// failure cleanup to prevent orphans
#unlink($upload_path . $yacht_img);
if (count($slider_images) > 0) {
foreach ($slider_images as $image) {
#unlink($upload_path . $image);
}
}
show_error($this->upload->display_errors());
}
$slider_images[] = $this->upload->data('file_name');
}
}
$this->yacht_model->create_yacht($yacht_img, $slider_images);
}
}
Model:
public function create_yacht($yacht_img, $slider_images) {
$slug = url_title($this->input->post('title'));
$data = array(
'title' => $this->input->post('title'),
'slug' => $slug,
'img' => $yacht_img,
'city' => $this->input->post('city'),
'category' => $this->input->post('category'),
'price' => $this->input->post('price'),
'description' => $this->input->post('description')
);
$this->db->insert('yachts', $data);
$insert_id = $this->db->insert_id();
if (count($slider_images) > 0) {
foreach ($slider_images as $image) {
$this->db->insert('yacht_slider', array('yacht_slide_id' => $insert_id, 'slide' => $image));
}
}
}

Answer 2

if you are using mySQL 7 then it supports json datatype and you can save as array. If your using lower version of MySQL best solution is to convert your image array into JSON format then insert that into table.
For more details on JSON in MySQL you can refer
https://dev.mysql.com/doc/refman/8.0/en/json.html#json-values