php - Upload canvas image using codeigniter -


i try upload canvas image using codeigniter, have ajax code

$.ajax({    url: '/gifs/savepreview',    type: 'post',    beforesend: function (xhr) {        xhr.setrequestheader('content-type','application/x-www-form-urlencoded');    },    data: 'imgdata=' + canvas.todataurl('image/gif'),    success: function () { },    error: function () { }, });

and here code saving post data

$imgdata = $this->security->xss_clean($this->input->post('imgdata'));  $temp_file_path = tempnam(sys_get_temp_dir(), 'tempimage');  $img = str_replace('data:image/png;base64,', '', $imgdata); $img = str_replace('[removed]', '', $img); $img = str_replace(' ', '+', $img); file_put_contents($temp_file_path, base64_decode($img)); $image_info = getimagesize($temp_file_path);  $_files['userfile'] = array(     'name' => uniqid().'.'. str_replace("image/", '', $image_info['mime']),     'type'  => $image_info['mime'],     'tmp_name' => $temp_file_path,     'error' => upload_err_ok,     'size'  => filesize($temp_file_path), );  $config['upload_path'] = 'assets/uploads/'; $config['remove_spaces'] = true; $config['allowed_types'] = "*"; $config['max_size'] = "2048000"; $config['overwrite'] = true; $config['file_name'] = "canvas-image"; $this->load->library('upload', $config); $this->upload->initialize($config); if ($this->upload->do_upload('userfile')){     return "success"; }else{;     echo $this->upload->display_errors(); }

please me fix or find other way upload canvas image.


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