Decode image base64 codeigniter and save it into file and database - php

Question

I want to make a codeigniter controller that can retrieve a "POST" base64 image, decode it, then save it into a local folder then having that path into my MySQL.
I am stuck at this point.
Can you please give me some references of this case?

Answer 1

The following code snippet is a copy=paste from CodeIgniter's official user documentation.
<?php
class Upload extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->helper(array('form', 'url'));
}
public function index()
{
$this->load->view('upload_form', array('error' => ' ' ));
}
public function do_upload()
{
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = 100;
$config['max_width'] = 1024;
$config['max_height'] = 768;
$this->load->library('upload', $config);
if ( ! $this->upload->do_upload('userfile'))
{
$error = array('error' => $this->upload->display_errors());
$this->load->view('upload_form', $error);
}
else
{
$data = array('upload_data' => $this->upload->data());
$this->load->view('upload_success', $data);
}
}
}
?>
CodeIgniter does have built-in file upload class with very good documentation which I really suggest you give a quick look.
The one part or modification you will have to check carefully looks like this:
$config['file_name'] = 'a_'.md5(microtime()).'.jpg';
which tells codeigniter where to save the file in any local path you want, then from here you can simply save that to your database like this:
$result = $this->db->query('INSERT INTO AVATARS VALUES (NULL, 'user1', '" . $config['file_name'] . "') ');
Please notice that this is pseudo-code only and has not been tested in any production environment; yet, shall perfectly work.
Good luck

Answer 2

$base should have a base64 encoded image string:
$base = $_POST["profile_image"];
$filename = $_POST["file_name"];
$filename = $_POST["user_id"];
$binary = base64_decode($base);
header('Content-Type: bitmap; charset=utf-8');
$file = fopen('./Images/'.$filename, 'wb');
fwrite($file, $binary);
fclose($file);