<?php
include 'config.php';
if (isset($_REQUEST['submit_Register']))
{
    if (empty($_REQUEST['username']))
    {
        die('Nezadal si jméno');
    }
    if (empty($_REQUEST['password']))
    {
        die('Nezadal si heslo');
    }

    $username = $_REQUEST['username'];
    $password = $_REQUEST['password'];
    $username = mysqli_real_escape_string($conn, $username);
    $password = mysqli_real_escape_string($conn, $password);
    $kontrola = "SELECT * FROM login WHERE username = '$username'";
    $vysledek = $conn->query($kontrola);
    if ($vysledek->num_rows > 0)
    {
        while ($row = $vysledek->fetch_assoc())
        {
            die('Toto jméno jíž existuje');
        }
    }
    else
    {
    }
    $hash = password_hash($password, PASSWORD_BCRYPT);
    $hash = mysqli_real_escape_string($conn, $hash);
    $sql = "INSERT INTO login (username, heslo) VALUES ('$username', '$hash')";
    $query = $conn->query($sql);
}
?>


<form action="register.php" method="post">

<input placeholder="Jméno" type="text" name="username"><br>
<input placeholder="Heslo" type="password" name="password"><br>
<button type="submit" name="submit_Register">Odeslat</button><br>



</form>