I am trying to install the Google reCaptcha for a Contact page and I have really limited knowledge with php. I'm unsure as to where the information Google requires should go in my php file. Here are Google's instructions for that:
When your users submit the form where you integrated reCAPTCHA, you'll get as part of the payload a string with the name "g-recaptcha-response". In order to check whether Google has verified that user, send a POST request with these parameters:
I'm really unsure as to where the above information should go. Any assistance is much appreciated.
解决方案
The google reCaptcha mechanism injects a hidden IFrame within your form, and returns a hashed string to your processing script called 'g-recaptcha-response'.
So, in your above PHP script, before /* Set e-mail recipient */ please add the following:
<?php
// error_reporting(E_WARNING);
function readURL($url)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
return $output;
}
$secret = "PASTE-YOUR-SECRET-KEY-HERE";
$verificationResponse = $_POST["g-recaptcha-response"];
if( empty($verificationResponse) ) die("Google did not POST the required g-recaptha-response");
$response = readURL("https://www.google.com/recaptcha/api/siteverify?secret=" . $secret . "&response=" . $verificationResponse . "");
$responseArray = json_decode($response, true);
if( $responseArray["success"] !== true) die("Invalid reCaptcha <a href=\"javascript:history.go(-1);\">Try Again</a>");
/* Set e-mail recipient */
$myemail = "info@thewiseinvestor.net";
/* Check all form inputs using check_input function */
$name = check_input($_POST['inputName'], "First and Last");
$email = check_input($_POST['inputEmail'], "Required");
$phone = check_input($_POST['inputPhone']);
$message = check_input($_POST['inputMessage'], "Brief Description");
/* If e-mail is not valid show error message */
if (!preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/", $email))
{
show_error("Invalid e-mail address");
}
/* Let's prepare the message for the e-mail */
$subject = "Contact Message from thewiseinvestor.net";
$message = "
Someone has sent you a message using your contact form:
Name: $name
Email: $email
Phone: $phone
Message:
$message
";
/* Send the message using mail() function */
mail($myemail, $subject, $message);
/* Redirect visitor to the thank you page */
header('Location:contact.html');
exit();
/* Functions we used */
function check_input($data, $problem='')
{
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
if ($problem && strlen($data) == 0)
{
show_error($problem);
}
return $data;
}
function show_error($myError)
{
?>
<html>
<body>
<p>Please correct the following error:</p>
<strong><?php echo $myError; ?></strong>
<p>Hit the back button and try again</p>
</body>
</html>
<?php
exit();
}
?>
Should work without any problems. The code will check if the reCaptcha was passed correctly before checking other things or sending you any emails.
Good luck.
这篇关于在联系表单 PHP 文件上安装 Google reCaptcha 信息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
