MINTA

<!DOCTYPE html>
<?php
    include_once 'header.php'

    if (isset($_POST['submit'])) {
        $dbServername = "localhost";
        $dbUsername = "root";
        $dbPassword = "root";
        $dbName = "db";
        $conn = mysqli_connect($dbServername, $dbUsername, $dbPassword, $dbName);
        if ($conn->connect_error) {
          die("Connection failed: " . $conn->connect_error);
        }

        $ceg = mysqli_real_escape_string($conn, $_POST['cegnev']);
        $kont = mysqli_real_escape_string($conn, $_POST['kapcsnev']);
        $email = mysqli_real_escape_string($conn, $_POST['kapcs_email']);
        $leir = mysqli_real_escape_string($conn, $_POST['leiras']);

        $sql = "INSERT INTO hirdet (cegnev, kapcsnev, kapcs_email, leiras) VALUES('$ceg', '$kont', '$email', '$leir')";
        if ($que = mysqli_query($conn, $sql)) {
            echo "Sikeres feltoltes!";
        }
    }
?>
<html>
  <head>
    <meta charset="utf-8">
    <title>Submit</title>
    <link rel="stylesheet" href="style.css">
  </head>
  <body>

    <form  id="fr" class="fr" method="post">
     <input id="ceg1" type="text" name="ceg" placeholder="Cég neve"></input><br>
     <input id="ceg2" type="text" name="kontakt" placeholder="Kapcsolattartó neve"><br>
     <input id="ceg3" type="email" name="email" placeholder="Kapcsolattartó email címe"><br>
     <input id="ceg4" type="text" name="leir" placeholder="Leírás (max. 200 szó)"><br>
     <h1>Témakör</h1>
     <input type="radio" name="menu" value="1">1</input><br>
     <input type="radio" name="menu" value="2">2</input><br>
     <input type="radio" name="menu" value="3">3</input><br>
     <input type="submit" name="submit" value="submit" onclick="myFunc"></input>
   </form>
  </body>
</html>