<?php
         session_start();
         $servername = "localhost";
            $username = "root";
            $password = "";
            $dbname = "pocztadb";
            $conn = mysqli_connect($servername, $username, $password, $dbname);
            if (!$conn) {
                die("Connection failed: " . mysqli_connect_error());
            }
            $sqlwiad = "SELECT id, nadawca, odbiorca, tytul, tresc, przeczytana, wlasciciel, katalog, data FROM wiadomosci";
            $result = mysqli_query($conn, $sqlwiad);

            if (mysqli_num_rows($result) > 0) {
                echo "<table><th>ID:</th><th>Nadawca:</th><th>Odbiorca:</th><th>Tytuł:</th><th>Treść:</th><th>Przeczytana:</th><th>Właściciel:</th><th>Nadawca:</th>Katalog:<th>Data:</th>";
                while ($row = mysqli_fetch_assoc($result)) {
               //     echo "<span><tr><td><a target='_blank' href='post.php?id=".$row["id"]."'>" . $row["tytul"] . "</a></td><td>" .$kategorie[$row["idkategorii"]] . "</td><td>". date("d-m-Y i:H",strtotime($row["data"])) . "</td><td><a href='updatePostForm.php?id=" . $row["id"] . "'><img src='pen.png'></a> <a href='deletePost.php?id=" . $row["id"] . "'><img src='delete.png'></a></td></tr></span>";
             //       } else if ($_GET["id"]==0) {
                        echo "<span><tr><td>".$row["id"]."</td><td>" .$row["nadawca"] . "</td><td>" .$row["odbiorca"] . "</td><td>" .$row["tytul"] . "</td><td>" .$row["tresc"] . "</td><td>" .$row["przeczytana"] . "</td><td>" .$row["wlasciciel"] . "</td><td>" .$row["nadawca"] . "</td><td>" .$row["katalog"] . "</td><td>". date("d-m-Y i:H",strtotime($row["data"])) . "</td><td><a href='updatePostForm.php?id=" . $row["id"] . "'><img src='pen.png'></a> <a href='deletePost.php?id=" . $row["id"] . "'><img src='delete.png'></a></td></tr></span>";
                 //   }

                }
            }
                echo "</table>";

            mysqli_close($conn);
        ?>