Why is INSERT INTO not adding data to phpmyadmin?

Question

PHP

Hello)
There is a handler that collects data from forms:

<?php
header('Content-Type: text/html; charset=utf-8');
include_once("database.php"); //это подключение к базе через отдельный пхп


if(isset($_POST['add'])) //если нажали на кнопку, но выполнится скрипт ниже
{
    $product = '300';
 $name  = strip_tags(trim($_POST['name']));
  $age = strip_tags(trim($_POST['age']));
  $url   = strip_tags(trim($_POST['url']));
  $mail = strip_tags(trim($_POST['mail']));

  $check = '';
if (!empty($_V["check"]) && is_array($_POST["check"]))
{$check = implode(" ", $_POST["check"]);
}; // сохраняем в переменную данные полученные из чекбоксов

    
    
   $result =  mysql_query(" 
                    INSERT INTO `zakaz` (name, Age, mail, Url, Product, Preferences)
                    VALUES ('$name', '$age', '$mail', '$url', '$product', '$check') 
    ");
}
   if ($result) {
    echo ("Добавление прошло успешно");
} else {
    echo ("Данные не были добавлены");
}
?>

The problem is that the script passes, but the data is not added to the table.
My options:
- I admit that the problem is in the syntax in this line:
INSERT INTO `zakaz` (name, Age, mail, Url, Product, Preferences)
VALUES ('$name', '$age', '$mail', '$ url', '$product', '$check')
- maybe it's the $check variable (combined variable from the checkbox), and for some reason it doesn't want to get into the table
Connoisseurs, please help!

Answer 1

echo mysql_error();
add. Write down what he writes.

Answer 2

the plate looks like this