How can I integrate ReCaptcha into an HTML/PHP contact form?

[Bracell]

I have an outdated HTML website and I would like to incorporate ReCaptcha into the contact form. I am experiencing issues with a cryptocurrency spammer who is sending me spam messages through the contact form. Below is the contact form code from the index.php file (not the entire code, only the relevant section).


<div style="float: right;"><form action="contactprocess.php" method="post" name="freecontactform" id="freecontactform" onsubmit="return validate.check(this)"> <table width="550" border="0" cellpadding="0" cellspacing="0"> <tr> <td valign="top" style="font-weight:bold;">Your Name:</td> </tr> <tr> <td valign="top" class="formtd"><input name="Full_Name" type="text" class="formtxt" id="Full_Name" /></td> </tr> <tr> <td valign="top" style="font-weight:bold;">Your Email Address:</td> </tr> <tr> <td valign="top" class="formtd"><input name="Email_Address" type="text" class="formtxt" id="Email_Address" maxlength="100" /></td> </tr> <tr> <td valign="top" style="font-weight:bold;">Your Message:</td> </tr> <tr> <td valign="top" class="formtd"><textarea name="Your_Message" class="formtxt" id="Your_Message" style="height:160px" maxlength="2000"></textarea></td> </tr> <tr> <td><input name="AntiSpam" type="hidden" id="AntiSpam" value="25" maxlength="100" /> <div class="checkout"><a href="#" onclick="document.forms['freecontactform'].submit();">Send Message</a></div></td> </tr> </table> <p>&nbsp;</p> </form></div>

contactprocess .php

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The PHP file responsible for processing the contact form is named "contactprocess.php." I am unable to post the actual code here because of restrictions on Blackhatworld, so I am sharing a link to CodePile, where the code can be found.

I have succeeded in integrating the ReCaptcha box by inserting specific code into the index.php file (which is not displayed in the above code, but I know the appropriate location to add the code). Here is the link to the code on CodePile (sharing this link because of Blackhatworld's restrictions): https://www.codepile.net/pile/qnbObW5p


<div class="g-recaptcha brochure__form__captcha" data-sitekey="YOUR SITE KEY"></div>

However, the ReCaptcha box must connect to the submit button in order to perform validation. I am unsure how to accomplish this, but I believe code must be included in the contactprocess.php file.

I have located two tutorials that may be beneficial in assisting you in aiding me:

How to add Google reCAPTCHA to a Form (PHP/HTML)

When you need to add a relatively simple new feature like this, if you’re anything like me, you don’t want to be reading through pages and pages of documentation; you want an example you can implement quickly then edit as …

www.bronco.co.uk

How to Add Google reCAPTCHA in PHP Contact Form? - YourBlogCoach

Add google reCAPTCHA in contact form or any other form using the PHP. Generate google reCAPTCHA API keys and integrate with website and forms.

yourblogcoach.com

If anyone is able to provide assistance, it would be greatly appreciated. Thank you.

 

[SleekVulture]

Scorpion, why haven't you tried learning programming? It's quite simple! You'll find numerous helpful resources available.

 

[PhiaWise]

function reCaptcha($recaptcha){
  $secret = "YOUR SECRET KEY";
  $ip = $_SERVER['REMOTE_ADDR'];

  $postvars = array("secret"=>$secret, "response"=>$recaptcha, "remoteip"=>$ip);
  $url = "https://www.google.com/recaptcha/api/siteverify";
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_TIMEOUT, 10);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $postvars);
  $data = curl_exec($ch);
  curl_close($ch);

  return json_decode($data, true);
}

before

$email = $_POST['Email_Address'];

and

substitute the section related to sending an email with this.

$recaptcha = $_POST['g-recaptcha-response'];
$res = reCaptcha($recaptcha);
if($res['success']){
  if(@mail($your_email,$email_subject,$email_content)) {

        header('Location: http://site.com');

    }

  

    if(@mail($email,$email_subjectreply,$email_autoreply,$header = 'From: site.com <[email protected]>' . "\r\n")) {

        header('Location: http://site.com');

    }
}else{
  echo 'ERROR!';
}

Why you don't learn programming Scorpion? It's easy! You can use a lot of blue tack there.

Due to his laziness, he chooses to watch TV series rather than learning programming.

 

[Dularket]

function reCaptcha($recaptcha){
  $secret = "YOUR SECRET KEY";
  $ip = $_SERVER['REMOTE_ADDR'];

  $postvars = array("secret"=>$secret, "response"=>$recaptcha, "remoteip"=>$ip);
  $url = "https://www.google.com/recaptcha/api/siteverify";
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_TIMEOUT, 10);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $postvars);
  $data = curl_exec($ch);
  curl_close($ch);

  return json_decode($data, true);
}

before

$email = $_POST['Email_Address'];

and

substitute the section related to sending an email with this.

$recaptcha = $_POST['g-recaptcha-response'];
$res = reCaptcha($recaptcha);
if($res['success']){
  if(@mail($your_email,$email_subject,$email_content)) {

        header('Location: http://site.com');

    }

 

    if(@mail($email,$email_subjectreply,$email_autoreply,$header = 'From: site.com <[email protected]>' . "\r\n")) {

        header('Location: http://site.com');

    }
}else{
  echo 'ERROR!';
}

Why you don't learn programming Scorpion? It's easy! You can use a lot of blue tack there.

Due to his laziness, he chooses to watch TV series rather than learning programming.

Hey, friend, can you wait for a moment? I haven't had a meal in a considerable time, and suddenly, I started experiencing a sudden sensation of feeling hot/cold and dizzy. It came out of nowhere unexpectedly.

However, I'm familiar with this sensation; I'm sure it will disappear as soon as I eat something.

I'll be back in a minute...