验证reCaptcha V2：始终为false

Question

我正在尝试在我的网站（用PHP和Wordpress开发）中植入Google的reCaptcha V2。

我正在尝试验证用户是否在提交之前检查了此验证码。

这是我的验证：

<?php

if(isset($_POST['g-recaptcha-response']) && !empty($_POST['g-recaptcha-response'])){
  $privatekey = $secret;
  $captcha = $_POST['g-recaptcha-response'];
  $url = 'https://www.google.com/recaptcha/api/siteverify';
  $data = array(
      'secret' => $privatekey,
      'response' => $captcha,
      'remoteip' => $_SERVER['REMOTE_ADDR']
  );

  $curlConfig = array(
      CURLOPT_URL => $url,
      CURLOPT_POST => true,
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_POSTFIELDS => $data
  );

  $ch = curl_init();
  curl_setopt_array($ch, $curlConfig);
  $response = curl_exec($ch);
  curl_close($ch);
  $jsonResponse = json_decode($response);
  if ($jsonResponse->success == true) {
            $succMsg = 'Your contact request have submitted successfully.';
            echo "<script>alert(\"OK\")</script>";
  }
  else {
      $errMsg = 'Robot verification failed, please try again.';
            echo "<script>alert(\"KO ROBOT\")</script>";
    }
}
else{

  $errMsg = 'Please click on the reCAPTCHA box.';
    echo "<script>alert(\"KO CLICK ON BOX\")</script>";
}
?>

当我重新加载页面时，或者当我提交时没有选中验证码时，或者当我选中验证码时，它始终显示："KO ROBOT"

我也尝试过使用"file_get_contents"而不是curl，但是我遇到了SSL错误警告。

谢谢。

更新：

当我这样做时：

var_dump($jsonResponse);

我在页面上有这个：

object（stdClass）＃4028（2）{[“”成功“] => bool（false）[”错误代码“] => array（1）{[0] =>字符串（20）” invalid-input-secret “}}

更新2：

验证我的私钥后，我现在有了这个：

object（stdClass）＃4028（2）{[“”成功“] => bool（false）[”错误代码“] => array（1）{[0] =>字符串（20）“超时或重复“}}

Answer 1

尝试使用此密钥，只需替换密钥即可。

<?php
$response   = isset($_POST["g-recaptcha-response"]) ? $_POST['g-recaptcha-response'] : null;
$privatekey = "YOUR PRIVATE KEY";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://www.google.com/recaptcha/api/siteverify");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, array(
    'secret' => $privatekey,
    'response' => $response,
    'remoteip' => $_SERVER['REMOTE_ADDR']
));

$resp = json_decode(curl_exec($ch));
curl_close($ch);

if ($resp->success) {

} else {

    //failed return mess
}
?>