With this code, I am getting only local correct value with variable `$date` in MySQL column, because PHP gives me time so it must be correct. What should I change to save JSON post to PHP variables and correctly send it to SQL columns?

It's my JSON call:

```
{  
   "buyer":{  
      "id":142694,
      "email":"test@example.com",
      "quantity":1,
      "sent_count":0,
      "created_at":"2018-12-29T20:29:23+01:00"
   },
   "listing":{  
      "id":36,
      "name":"GTA V STEAM KEY"
   },
   "database":{  
      "id":16141,
      "available_codes_count":7
   },
   "payment":{  
      "id":null,
      "code":null,
      "amount":null,
      "currency":null,
      "done":false
   },
   "created_at":"2018-12-29T20:29:23+01:00"
}

```

```php
<?php
$json = json_decode($_POST);

$email = var_dump($json->buyer->email);
$name = var_dump($json->listing->name);
$count = var_dump($json->buyer->quantity);
$code = var_dump($json->payment->code);

date_default_timezone_set('Europe/Warsaw');
$date = date("Y-m-d H:i:s", time());

$servername = "localhost";
$username = "test1";
$password = "test2";
$dbname = "test3";

$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "INSERT INTO list (email, name, date, count, code)
VALUES ('".$email."', '".$name."', '".$date."', '".$count."', '".$code."')";

if ($conn->query($sql) === true) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();

```