如何删除在线表格中的g-recaptcha-response？

Question

请参阅下面的图片,我突出显示,我可以在收到电子邮件时知道如何删除g-recaptcha-response？

$mailTo = "$email_address";

$mailSubject = "$email_subject";

$mailBody = "The form values entered by the user are as follows: \n\n";

foreach($HTTP_POST_VARS as $key=>$value)
{
if(isset($_POST['g-recaptcha-response'])){$captcha=$_POST['g-recaptcha-response'];
}
if(!$captcha)
{
echo "<meta HTTP-EQUIV=\"REFRESH\" content=\"0; url=$redirect_to_failed\">";
exit;
}
$response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=&response=".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']);
if($response.success==false)
{
          echo '<h2>You are spammer! /h2>';
}else
{
          echo '<h2>Thanks for contacting us.</h2>';
}

$mailBody .= "$key = $value\n";

}

Answer 1

检查g-recaptcha-response循环外部,每次迭代时都不需要检查它.

然后检查$_POST变量的键是否g-recaptcha-response在将其添加到消息之前.

$mailTo = "$email_address";

$mailSubject = "$email_subject";

$mailBody = "The form values entered by the user are as follows: \n\n";

if(isset($_POST['g-recaptcha-response'])){$captcha=$_POST['g-recaptcha-response'];
}

foreach($HTTP_POST_VARS as $key=>$value)
{
    if(!$captcha)
    {
        echo "<meta HTTP-EQUIV=\"REFRESH\" content=\"0; url=$redirect_to_failed\">";
        exit;
    }
    $response=file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=&response=".$captcha."&remoteip=".$_SERVER['REMOTE_ADDR']);
    if($response.success==false)
    {
              echo '<h2>You are spammer! /h2>';
    }else
    {
              echo '<h2>Thanks for contacting us.</h2>';
    }
    if ($key != 'g-recaptcha-response') {
        $mailBody .= "$key = $value\n";
    }
}