get response from jquery file upload plugin uploadhandler file - php

Question

hello Friends i am using the jquery file upload plugin to upload the files.when i upload the any file then it moves into a folder successfully and also file info into database.
but now i want to response back after successfully insertion into database.
And i also have always an error that is:Error SyntaxError: Unexpected token <
the image of error look like this:
and here is the function in which i am performing database insert query and moving image into folder.
protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,
$index = null, $content_range = null) {
GLOBAL $con;
$time=time();
$folder_path="../../uploads/media/";
$rand=rand();
$user_id=$_SESSION['id'];
$file = new stdClass();
$file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error,
$index, $content_range);
$file->size = $this->fix_integer_overflow(intval($size));
$file->type = $type;
if ($this->validate($uploaded_file, $file, $error, $index)) {
$this->handle_form_data($file, $index);
$upload_dir = $this->get_upload_path();
if (!is_dir($upload_dir)) {
mkdir($upload_dir, $this->options['mkdir_mode'], true);
}
$file_path = $this->get_upload_path($file->name);
$append_file = $content_range && is_file($file_path) &&
$file->size > $this->get_file_size($file_path);
if ($uploaded_file && is_uploaded_file($uploaded_file)) {
// multipart/formdata uploads (POST method uploads)
if ($append_file) {
file_put_contents(
$file_path,
fopen($uploaded_file, 'r'),
FILE_APPEND
);
} else {
//move_uploaded_file($uploaded_file, $file_path);
////
$filename = date('YmdHis',$rand).$_SESSION['id'].$name;
$file_size=$size;
$file_size=$file_size/1000;
move_uploaded_file($uploaded_file,$folder_path.$filename);
mysqli_query($con,"insert into gallery(login_id,pic,timestamp,file_size,status)values('$user_id','$filename','$time','$file_size','1')");
$gallery_id=mysqli_insert_id($con);
////
}
} else {
// Non-multipart uploads (PUT method support)
file_put_contents(
$file_path,
fopen('php://input', 'r'),
$append_file ? FILE_APPEND : 0
);
}
$file_size = $this->get_file_size($file_path, $append_file);
if ($file_size === $file->size) {
$file->url = $this->get_download_url($file->name);
if ($this->is_valid_image_file($file_path)) {
$this->handle_image_file($file_path, $file);
}
} else {
$file->size = $file_size;
if (!$content_range && $this->options['discard_aborted_uploads']) {
unlink($file_path);
$file->error = $this->get_error_message('abort');
}
}
$this->set_additional_file_properties($file);
}
return $file;
}
now from the above function i want the response gallery_id
how can i remove this error and get response after the successfull file upload.
You are the genious people please help me and ask if something not clear.