Witam.
Mam taką zagadkę.Mam formularz wszystko ok działa. Ale chciałbym zabezpieczyć go poprzez capcha. Niestety nie mam pojęcia gdzie i do jakiego pliku wstawić kod.Aby dopiero po potwierdzeniu Capcha wysyłał.

Imam drugie pytanie. Jak w html5 ukryć przed robotami spamującymi adres email.

Kod formularza HTML

[HTML] pobierz, plaintext 
 
 </section>
        <section class="well1">
          <div class="container">
            <h2>Wyślij wiadomość</h2>
            <form method="post" action="bat/sendmail.php" class="mailform off2">
              <input type="hidden" name="form-type" value="contact">
              <fieldset class="row">
                <label class="grid_4">
                  <input type="text" name="name" placeholder="Twoje imię i nazwisko:" data-constraints="@LettersOnly @NotEmpty">
                </label>
                <label class="grid_4">
                  <input type="text" name="phone" placeholder="Telefon:" data-constraints="@Phone">
                </label>
                <label class="grid_4">
                  <input type="text" name="email" placeholder="Email:" data-constraints="@Email @NotEmpty">
                </label>
                <label class="grid_12">
                  <textarea name="message" placeholder="Wiadomość:" data-constraints="@NotEmpty"></textarea>
                </label>
 
                <div class="mfControls grid_12">
                  <button type="submit" class="btn">Wyślij wiadomość</button>
                </div>
              </fieldset>
            </form>
          </div>
        </section>
[HTML] pobierz, plaintext 

Kod php formularza i pytanie jak poprawić linijkę by akceptował polskie znaki.

[PHP] pobierz, plaintext 
<?php
 
$recipients = 'adres@adres.pl';
//$recipients = '#';
 
try {
    require './phpmailer/PHPMailerAutoload.php';
 
    preg_match_all("/([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)/", $recipients, $addresses, PREG_OFFSET_CAPTURE);
 
    if (!count($addresses[0])) {
        die('MF001');
    }
 
    if (preg_match('/^(127\.|192\.168\.)/', $_SERVER['REMOTE_ADDR'])) {
        die('MF002');
    }
 
    $template = file_get_contents('rd-mailform.tpl');
 
    if (isset($_POST['form-type'])) {
        switch ($_POST['form-type']){
            case 'contact':
                $subject = 'A message from your site visitor';
                break;
            case 'subscribe':
                $subject = 'Subscribe request';
                break;
            case 'order':
                $subject = 'Order request';
                break;
            default:
                $subject = 'A message from your site visitor';
                break;
        }
    }else{
        die('MF004');
    }
 
    if (isset($_POST['email'])) {
        $template = str_replace(
            ["<!-- #{FromState} -->", "<!-- #{FromEmail} -->"],
            ["Email:", $_POST['email']],
            $template);
    }else{
        die('MF003');
    }
 
    if (isset($_POST['message'])) {
        $template = str_replace(
            ["<!-- #{MessageState} -->", "<!-- #{MessageDescription} -->"],
            ["Message:", $_POST['message']],
            $template);
    }
 
    preg_match("/(<!-- #{BeginInfo} -->)(.|\n)+(<!-- #{EndInfo} -->)/", $template, $tmp, PREG_OFFSET_CAPTURE);
    foreach ($_POST as $key => $value) {
        if ($key != "email" && $key != "message" && $key != "form-type" && !empty($value)){
            $info = str_replace(
                ["<!-- #{BeginInfo} -->", "<!-- #{InfoState} -->", "<!-- #{InfoDescription} -->"],
                ["", ucfirst($key) . ':', $value],
                $tmp[0][0]);
 
            $template = str_replace("<!-- #{EndInfo} -->", $info, $template);
        }
    }
 
    $template = str_replace(
        ["<!-- #{Subject} -->", "<!-- #{SiteName} -->"],
        [$subject, $_SERVER['SERVER_NAME']],
        $template);
 
    $mail = new PHPMailer();
    $mail->From = $_SERVER['SERVER_ADDR'];
    $mail->FromName = $_SERVER['SERVER_NAME'];
 
    foreach ($addresses[0] as $key => $value) {
        $mail->addAddress($value[0]);
    }
 
    $mail->CharSet = 'utf-8';
    $mail->Subject = $subject;
    $mail->MsgHTML($template);
 
    if (isset($_FILES['attachment'])) {
        foreach ($_FILES['attachment']['error'] as $key => $error) {
            if ($error == UPLOAD_ERR_OK) {
                $mail->AddAttachment($_FILES['attachment']['tmp_name'][$key], $_FILES['Attachment']['name'][$key]);
            }
        }
    }
 
    $mail->send();
 
    die('MF000');
} catch (phpmailerException $e) {
    die('MF254');
} catch (Exception $e) {
    die('MF255');
}
 
?>
[PHP] pobierz, plaintext 

Masz w dokumentacji opisane włącznie z kodem PHP: https://developers.google.com/recaptcha/intro#audience
Sprawdzasz w POST g-recaptcha-response