Untitled

<!DOCTYPE html>
<html><head><title>Tickety</title>
<form method="post">
Nick: <input type="text" name="nick"><br>
Heslo: <input type="password" name="heslo"><br>
<input type="submit" value="Přihlásit se">
</form>


<?php
$servername = "mysql.hicoria.com";
$username = "mysql_haha";
$password = "hahahaha";
$dbname = "mysql_haha";

if(isset($_POST["nick"])){
    $nick = htmlentities($_POST["nick"]);
    // Vytvorit pripojeni
    $conn = new mysqli($servername, $username, $password, $dbname);
    // Zkontrolovat spojení
    if ($conn->connect_error) {
        die("Spojení selhalo: " . $conn->connect_error);
    }
    $result = $conn->query("SELECT * FROM authme WHERE username = '".$nick."'");
    if ($result->num_rows > 0) {
        while($row = $result->fetch_assoc()) {
            $getUserData = $row;
            break;
        }
        $salt = explode('$', $getUserData['password'])[2];
        $hash1 = hash('sha256', $_POST["heslo"]);
        $user_password_hashed = '$SHA$'.$salt.'$'.hash('sha256', $hash1.$salt);

        if($getUserData['password'] == $user_password_hashed){
            // přihlásit - heslo sedí
            echo("Správné heslo :)");
        }else{
            echo("Špatné heslo");
        }
    } else {
        echo("Uživatel neexistuje");
    }
    $conn->close();
}

?>

</body></html>