<?php

        $wynik = $_GET["id"];

        $sql = "DELETE FROM autor_has_ksiazka WHERE ksiazka_id_ksiazka = $wynik";

        if ($conn->query($sql) === TRUE) {
            $sql1 = "DELETE FROM ksiazka WHERE id_ksiazka = $wynik";

            if($conn->query($sql1) === TRUE) {
                echo "Record deleted successfully";
            }
        } else {
            echo "Error updating record: " . $conn->error;
        }

    ?>

</center></body>