<?php
$servername = "localhost";
$username = "autoaukcje_wp1";
$password = "W)0[2cz[]jZGDvLgUY.50(]6";
$dbname = 'autoaukcje_wp1';

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

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

$sql = "SELECT `ID` FROM `wp_posts`  WHERE `post_status` = 'publish' AND  `post_type` = 'listing_type' ORDER BY 'post_date' DESC ";
$result = $conn->query($sql);

echo $sql;

if ($result->num_rows > 0) {
    echo 'sa wyniki';
    while($row = $result->fetch_assoc()) {
        echo $row['id'];
    }
} else {
    echo "0 results";
}



$conn->close();

?>