WP Eklentisiz İletişim Formu

<?php
/*
Template Name: Contact
*/
$cp_question = "5+1 = ?";
$cp_answer = "6";
?>
<?php get_header(); ?>
<div id="content">
 
 
     <?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
 
 
    <?php
     //validate email adress
     function is_valid_email($email)
     {
        return (eregi ("^([a-z0-9_]|\\-|\\.)+@(([a-z0-9_]|\\-)+\\.)+[a-z]{2,4}$", $email));
     }
     function is_valid_user($answer)
     {
      global $cp_answer;
      if ($answer == $cp_answer) { return true; } else { return false;}
     }
     //clean up text
     function clean($text)
     {
      return stripslashes($text);
     }
     //encode special chars (in name and subject)
     function encodeMailHeader ($string, $charset = 'UTF-8')
     {
         return sprintf ('=?%s?B?%s?=', strtoupper ($charset),base64_encode ($string));
     }
     $cp_name    = (!empty($_POST['cp_name']))    ? $_POST['cp_name']    : "";
     $cp_email   = (!empty($_POST['cp_email']))   ? $_POST['cp_email']   : "";
     $cp_url     = (!empty($_POST['cp_url']))     ? $_POST['cp_url']     : "";
     $cp_ans     = (!empty($_POST['cp_ans']))     ? $_POST['cp_ans']     : "";
     $cp_message = (!empty($_POST['cp_message'])) ? $_POST['cp_message'] : "";
     $cp_message = clean($cp_message);
     $error_msg = "";
     $send = 0;
     if (!empty($_POST['submit'])) {   
      $send = 1;
      if (empty($cp_name) || empty($cp_email) || empty($cp_message) || empty($cp_ans)) {
       $error_msg.= "<p style='color:#a00'><strong>Gerekli tüm alanları doldurun.</strong></p>\n";
       $send = 0;       
      }      
      if (!is_valid_email($cp_email)) {
       $error_msg.= "<p style='color:#a00'><strong>Yanlış Bir Mail Adresi Girdiniz.</strong></p>\n";
       $send = 0;
      } 
      if (!is_valid_user($cp_ans)) {
       $error_msg.= "<p style='color:#a00'><strong>Yanlış Cevap.</strong></p>\n";
       $send = 0;
      }         
     }
     if (!$send) { ?>
 
<p>Soru, Görüş ve Önerilerinizi Bize Ulaştırmak
     için İletişim Formunu Kullanabilirsiniz..</p><br />
 
<?php echo $error_msg;?>
 
<form method="post" action="<?php echo "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; ?>" id="contactform">
 
 
                       <strong>İsim</strong>*<br/>
         <input type="text" class="textbox" id="cp_name" name="cp_name" value="<?php echo $cp_name ;?>" /><br/><br/>
         <strong>Mail</strong>*<br/>
         <input type="text" class="textbox" id="cp_email" name="cp_email" value="<?php echo $cp_email ;?>" /><br/><br/>
         <strong>Websiteniz</strong><br/>
         <input type="text" class="textbox" id="cp_url" name="cp_url" value="<?php echo $cp_url ;?>" /><br/><br/>
         <strong><?php echo $cp_question; ?> </strong>*<br/>
         <input type="text" class="textbox" id="cp_ans" name="cp_ans" value="<?php echo $cp_ans ;?>" /><br/><br />
         <strong>Mesajınız</strong>*<br/>    
         <textarea id="cp_message" name="cp_message" cols="60%" rows="10"><?php echo $cp_message ;?></textarea><br/>
         <input type="submit" id="submit" name="submit" value="Gönder" />  
 
       </form>
 
     <?php
     } else {
      $displayName_array = explode(" ",$cp_name);
      $displayName = htmlentities(utf8_decode($displayName_array[0]));
 
      $header  = "MIME-Version: 1.0\n";
      $header .= "Content-Type: text/plain; charset=\"utf-8\"\n";
      $header .= "From:" . encodeMailHeader($cp_name) . "<" . $cp_email . ">\n";
      $email_subject = "[" . get_settings('blogname') . "] " . encodeMailHeader($cp_name);
      $email_text  = "From......: " . $cp_name . "\n" .
         "Email.....: " . $cp_email . "\n" .
         "Url.......: " . $cp_url . "\n\n" .
         $cp_message;
      if (@mail(get_settings('admin_email'), $email_subject, $email_text, $header)) {
       echo "<h2>Tebrikler " . $displayName . ",</h2><p>Mesajınız Gönderildi.</p>";
      }
     }
     ?>
    <?php endwhile; ?>
 
  <?php endif; ?>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>

<textarea id="cp_message" name="cp_message" cols="60%" rows="10">