Sql issues when trying to upload using php - php

Question

I'm trying to upload a video to a folder which is working but, the relevant entry in the DB isn't occurring to match it. Really having trouble seeing what's wrong, as no errors are reported.
session_start();
require 'db.php';
$name = $_FILES['video']['name'];
$uploader = $_SESSION['first_name'].$_SESSION['last_name'];
$newstring = $_SESSION['last_name'].'_'.$_SESSION['first_name'].'_'.date('ymdhms').".mp4";
$extension = strtolower(substr($name, strpos($name, '.') + 1));
$size = $_FILES['video']['size'];
$max_size = '1073741824';
$type = $_FILES['video']['type'];
$id = $_SESSION['id'];
$date = date('Y-m-D');
$tmp_name = $_FILES['video']['tmp_name'];
if(!empty($name)){
$location = "uploads/";
if($extension=='mp4'&&$type == 'video/mp4'){
if($size <= $max_size){
if(move_uploaded_file($tmp_name, $location.$newstring)){
$sql = "INSERT INTO videos (file_name, upload_by, date) VALUES
('$newstring', '$id', '$date')";
mysqli_query($mysqli, $sql);
require('profile.php');
$_SESSION['message'] = "Upload Successful!";
header('Refresh:0; url=profile.php');
}else{
$_SESSION['message'] = "File failed to upload";
header("location: error.php");
}
I'm not getting a corresponding DB entry. Any help would be really appreciated.

Answer 1

Try this:
$sql = "INSERT INTO videos (file_name, upload_by, date) VALUES
('".$newstring."', '".$id."', '".$date."')";