<?php
    echo "<form action='doplikuspr1.php' method='get'>Lp.:<input type='number' name='lp'/>Imię:<input type='text' name='name'/>Nazwisko:<input type='text' name='lastname'/>Miasto:<input type='text' name='city'/><br><input type='submit' value='Wyślij'></form>";
    @$lp = $_GET['lp'];
    @$name = $_GET['name'];
    @$lastname = $_GET['lastname'];
    @$city = $_GET['city'];
    $file = 'baza.txt';
    if($lp !="" AND $name !="" AND $lastname !="" AND $city !=""){
        $open = fopen($file,'a+');
        $stw = $lp." ".$name." ".$lastname." ".$city.PHP_EOL;
        fwrite($open,$stw);
        echo "Dopisano rekord do pliku.";
    }
    else{
        echo "Nie wszystkie pola zostały wypełnione.";
    }
?>