Codeigniter replace uploaded image

avatar, codeigniter, php, upload

Solution

There is a public attribute `overwrite` that dictates the decision to overwrite the original file. By default, a new filename is created based on the original. Here's the source from Upload.php in CI:

/*
 * Validate the file name
 * This function appends an number onto the end of
 * the file if one with the same name already exists.
 * If it returns false there was a problem.
 */
$this->orig_name = $this->file_name;

if ($this->overwrite == FALSE)
{
    $this->file_name = $this->set_filename($this->upload_path, $this->file_name);

    if ($this->file_name === FALSE)
    {
        return FALSE;
    }
}

So all you need to do to get the overwrite working is:

$this->load->library('upload', $config);
$this->upload->overwrite = true;

Problem

I'm using Codeigniter's File Uploading Class for uploading user avatars. Is there a way to replace a user's image file whenever he/she uploads a new one? I want to replace an existing avatar with the newest one uploaded. My image uploading controller ``` function upload_avatar() { $config['upload_path'] = './uploads/avatars/'; $config['allowed_types'] = 'jpg|png'; $config['overwrite'] = FALSE; //overwrite user avatar $config['encrypt_name'] = TRUE; $config['max_size'] = '200'; //in KB $this->load->library('upload', $config); if ( ! $this->upload->do_upload()) { $error = $this->upload->display_errors(); $this->session->set_flashdata('error', $error); redirect('/settings/avatar'); } else { $config['image_library'] = 'gd2'; $config['source_image'] = $this->upload->upload_path.$this->upload->file_name; $config['create_thumb'] = FALSE; $config['maintain_ratio'] = FALSE; $config['width'] = 120; $config['height'] = 120; $this->load->library('image_lib', $config); $this->image_lib->crop(); //Add image path to database $avatar_path = 'uploads/avatars/' . $this->upload->file_name; $user_id = $this->tank_auth->get_user_id(); $this->Settings_model->update_avatar($avatar_path, $user_id); $this->session->set_flashdata('success', 'Avatar updated!'); redirect('/settings/avatar'); } } ```

Original source