Why is my recaptcha response unsuccessful?

Question

I have been looking for what I might be doing wrong and for solutions all over but none seem to rectify my problem. I have a form with a recaptcha, it is pretty simple. But my recaptcha validation fails every time and echo's "Not successful" when it should be successful. What am I doing wrong? Here is my code.

<?php require_once('src/autoload.php'); require_once('src/ReCaptcha/ReCaptcha.php'); require_once('src/ReCaptcha/RequestMethod.php'); require_once('src/ReCaptcha/RequestParameters.php'); require_once('src/ReCaptcha/Response.php'); require_once('src/ReCaptcha/RequestMethod/Post.php'); require_once('src/ReCaptcha/RequestMethod/Socket.php'); require_once('src/ReCaptcha/RequestMethod/SocketPost.php'); require_once('src/ReCaptcha/RequestMethod/Curl.php'); require_once('src/ReCaptcha/RequestMethod/CurlPost.php'); $gRecaptchaResponse = $_POST['g-recaptcha-response']; $remoteIp = $_SERVER['REMOTE_ADDR']; $SITEKEY = 'XXXX'; $secret = 'XXXX'; $recaptcha = new \ReCaptcha\ReCaptcha($secret); $resp = $recaptcha->verify($gRecaptchaResponse, $remoteIp); if ($resp->isSuccess()) { echo "success"; } else { $errors = $resp->getErrorCodes(); echo "not success"; echo $errors; } ?>

Have you tried without sending the user's IP. I have had issues before where it didn't work for some reason when doing this and after all, it's only optional. — Thomas Smyth
– Thomas Smyth, Commented Jan 4, 2017 at 10:34
How are you calling this file? Is it when you submit a form or is it an AJAX call from a button on the same page as the form? — Thomas Smyth
– Thomas Smyth, Commented Jan 4, 2017 at 10:39

Thomas Smyth · Accepted Answer · 2017-01-04 11:22:53Z

//reCaptcha $StrUrl = "https://www.google.com/recaptcha/api/siteverify"; $StrSecretKey = "XXXXXX"; $data = array('secret' => $StrSecretKey, 'response' => $_POST['Response']); $ch = curl_init($StrUrl); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data)); $Response = curl_exec($ch); curl_close($ch); $Robot = json_decode($Response); $data = 0; if(isset($Robot->success) AND $Robot->success==true){ //CODE }

Try this. It was originally designed for an AJAX call, however if you change the $_POST['Response'] to the name of the response variable then it should work, hopefully.

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