August 2013 Archives

Here are the three simple steps to integrate google reCaptcha in your website forms (example: content or comments)

• Step 1: Sign Up and get your reCaptcha public and private keys.
  Click here to sign up.
• Step 2: Download reCaptcha setup file. >Click here to download setup file
• Step 3: integrate in your HTML form.

Here is the sample code.

<?php
//----------------
require_once('recaptchalib.php');
// Get a key from https://www.google.com/recaptcha/admin/create
  $publickey = "<enter your reCaptcha publickey>";
  $privatekey = "<enter your reCaptcha privatekey>";

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

if ($_POST["recaptcha_response_field"]) {
  $resp = recaptcha_check_answer ($privatekey,
  $_SERVER["REMOTE_ADDR"],
  $_POST["recaptcha_challenge_field"],
  $_POST["recaptcha_response_field"]);
if ($resp->is_valid) {
  echo "You got it!";
  $to = "yourMail@gmail.com";
  $subject = "newUserContact";
  $body = $_POST["comments"];
  $from = $_POST["email"];
  mail($from, $subject, $body, $from);
  // 
  } else {
  # set the error code so that we can display it
  $error = $resp->error;
  }
  }
?>
<form action="" method="post" name="check_form">
<table width="315" border="0" cellspacing="0" cellpadding="5" bordercolor="#FFFFFF">
  <tr>
  <td bgcolor="#FFFFFF"><strong>Name: * </strong><br>
  <input name="name" type="text" id="name2" size="30" /></td>
  </tr>
  <tr>
  <td><strong>eMail:*</strong> (Will not appear online)<br>
  <input name="email" type="text" id="email3" size="30" /></td>
  </tr>
  <tr>
  <td><strong>Comments:</strong><br>
  <textarea name="comments" cols="28" rows="5" id="textarea2"></textarea></td>
  </tr>
  <tr>
  <td><?php 
  echo recaptcha_get_html($publickey, $error);
  ?></td>
  </tr>
  <tr>
  <td><div align="right">
  <input name="submit" type="submit" value="Comment"/>
  &nbsp;&nbsp; </div></td>
  </tr>
  </table>
 </form>

Click here to view the sample page