<?php
$xml=false;

$servername = "localhost";
$username = "root";
$password = "";
$dbname = "dolnoslaskie";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$xml=simplexml_load_file('calosc_Data_2019_01_dolnoslaskie.xml') or die("Error: Cannot create object");
foreach($xml->children() as $infowpis)
{

  $sql1="insert into danepodstawowe values (null,'{$infowpis->DanePodstawowe->Imie}','{$infowpis->DanePodstawowe->Nazwisko}','{$infowpis->DanePodstawowe->NIP}','{$infowpis->DanePodstawowe->REGON}','{$infowpis->DanePodstawowe->Firma}','{$infowpis->IdentyfikatorWpisu}')";
  $conn->query($sql1);

}