Contact form with recaptcha

Download recaptch version 2 from https://github.com/google/ReCAPTCHA
Download recaptcha library from here


<!-- theme options: white, red, blackglass, clean -->
<script type="text/javascript">
    var RecaptchaOptions = {
        theme : 'clean'
    };
</script>
<?php

include('recaptchalib.php');
$publickey = "6LewXewSAAAAANSyq3pKWEME8Yjeg2g6avlHdthN";
$privatekey = "6LewXewSAAAAAC70yiCqkyHoKHvxBrjUSXoATFNZ";

# the response from reCAPTCHA
$resp = null;
# the error code from reCAPTCHA, if any
$error = null;


$errors = array();

$response_msg = '';

if(isset($_POST)&&sizeof($_POST)>0){

    $email = $_POST['email'];

    if(empty($_POST['your_name'])){
        $errors['your_name'] ="Name is required";
    }
  
    if(empty($email)){
        $errors['email'] ="Email is required";
    }elseif(!filter_var($email, FILTER_VALIDATE_EMAIL)){
        $errors['email'] ="Please enter valid email address";
    }
  
    if(empty($_POST['message'])){
        $errors['message'] ="Message is required field";
    }
  
    $resp = recaptcha_check_answer ($privatekey,
        $_SERVER["REMOTE_ADDR"],
        $_POST["recaptcha_challenge_field"],
        $_POST["recaptcha_response_field"]);

    if (!$resp->is_valid) {
        $errors['captcha'] ="Please enter correct captcha";
    }

    $message ='<html>';
    $message .='<head><title style="color:green">Contact form enquiry</title></head>';
    $message .='<body>';
    $message .='<table>';
    $message .='<tr><td valign="top">Name</td><td>'.$_POST['your_name'].'</td></tr>';
    $message .='<tr><td valign="top">Email</td><td>'.$_POST['email'].'</td></tr>';
    $message .='<tr><td valign="top">Phone</td><td>'.$_POST['phone'].'</td></tr>';
    $message .='<tr><td valign="top">Message</td><td>'.stripslashes($_POST['message']).'</td></tr>';
    $message .='</table>';

    $message .= "<p>This mail is sent via contact form of the site <a href='http://webalive.com.au/'>http://webalive.com.au/</a></p>";
    $message .='</body>';
    $message .='</html>';

    $to = 'autobillsmtp@webalive.biz';
    $bcc = '';

    $subject = 'Contact us query';
    $headers  = 'MIME-Version: 1.0' . "\r\n";
    $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
    $headers .= 'From: webalive.com.au <'.$email.'>'."\r\n" .
        'Bcc:'.$bcc. "\r\n" .
        'Reply-To: '.$email . "\r\n" .
        'X-Mailer: PHP/' . phpversion();

    if(sizeof($errors)==0){
        if(mail($to, $subject, $message, $headers)){
            $response_msg ='<div class="response success-msg">Your message was sent successfully</div>';
        }else{
            $response_msg ='<div class="response error-msg">Mail is not sent.Please try again</div>';
        }
    }
}

$error = false;
$error_html = '';
if(sizeof($errors)){
    $error_html .='<ul class="error">';
    foreach($errors as $key=>$value){
        $error_html .='<li>'.$value.'</li>';
    }
    $error_html .='</ul>';
    $error = true;
}

?>
<div class="contact-form-wrapper">
    <h3>Contact us</h3>
    <?php
        echo $response_msg;
        echo $error_html;
    ?>
    <form action="" method="post">
        <table  class="contact-us"  id="quote-request-form" border="0" cellspacing="0" cellpadding="0">
            <tr>
                <td valign="top" class="label">Name  <span class="required">*</span></td>
                <td valign="top" class="field">
                    <input type="text" name="your_name" value="<?php if($error){ echo $_POST['your_name']; } ?>" required/>
                </td>
            </tr>
            <tr>
                <td valign="top"  class="label">Email <span class="required">*</span></td>
                <td valign="top" class="field">
                    <input type="email" name="email" value="<?php if($error){ echo $_POST['email']; } ?>" required/>
                </td>
            </tr>
            <tr>
                <td valign="top"  class="label">Phone</td>
                <td valign="top" class="field">
                    <input type="text" name="phone" value="<?php if($error){ echo $_POST['phone']; } ?>" />
                </td>
            </tr>
            <tr>
                <td valign="top"  class="label">Message <span class="required">*</span></td>
                <td valign="top" class="field">
                    <textarea name="message" required><?php if($error){ echo $_POST['message']; } ?></textarea>
                </td>
            </tr>
            <tr>
                <td colspan="2" valign="top">
                    <div class="main_captcha"><?php echo recaptcha_get_html($publickey, $error); ?> </div>
                </td>
            </tr>
            <tr>
                <td colspan="2" valign="top">
                    <input type="submit" value="Send" />
                </td>
            </tr>
        </table>
    </form>
</div>
লেবেলসমূহ: