<pre>
<form>
login:      <input type='text' name='login'>
haslo:      <input type='password' name='haslo'>
imie:  	    <input type='text' name='imie'>
nazwisko:   <input type='text' name='nazwisko'>
telefon:    <input type='number' name='telefon'>
<input type='submit' name='slij'>
</form>
</pre>






<?php
if(isset($_GET['slij']))
{
$login=$_GET['login'];
$haslo=$_GET['haslo'];
$imie=$_GET['imie'];
$nazwisko=$_GET['nazwisko'];
$telefon=$_GET['telefon'];

$servername = "localhost";
$username = "root";
$password = "";
$dbname='waluk';
$conn = new mysqli($servername, $username, $password);
if ($conn->connect_error) {
    die("niedziala " . $conn->connect_error);
}
else
{
$conn = new mysqli($servername, $username, $password, $dbname);

$sql='INSERT INTO osoba (id, login, haslo,imie,nazwisko,telefon)
VALUES ('','.$login.', '.$haslo.','.$imie.','.$nazwisko.','.$telefon.')';
//$sql='INSERT INTO osoba (login)
//VALUEs ('."asddsa".')';
if ($conn->query($sql) === TRUE) {
    echo "dodano";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}
}
}
?>