PHP联系表格空白电子邮件

Question

Looks like send.php is being accessed and sending blank emails. Need to make it so send.php doesn't send email, unless the submit button is used on a form. I was told 'isset $_post' would help me, just not clear on how to execute it.

Here's send.php code:

    <?php

$recipient  =   '[e-mail]';

$email      =   $_REQUEST['Email'];

$subject    =   'Contact Form Submission';

$content    =   "The following has been submitted on your website 

";

$redirect   =   'thankyoupage.html';

$user = $_REQUEST['Email'];
$usersubject = "Subject";
$userheaders = "From: [e-mail]
";
$usermessage = "Blah blah blah";
mail($to,$subject,$message,$headers);
mail($user,$usersubject,$usermessage,$userheaders);

foreach($_POST as $k=>$v)
    {
        $content .= "$k: $v

";
    }

mail_it(stripslashes($content), $subject, $email, $recipient);

if (isset($_POST['redirect']))
    {
        header("Location:".$_POST['redirect']);
    }
        else
    {
        header("Location: $redirect");
    }

function mail_it($content, $subject, $email, $recipient)
    {

        $headers .= "From: ".$email."
";
        $headers .= "Reply-To: ".$email."
";

        if ($bcc) $headers .= "Bcc: ".$bcc."
"; 

        $headers .= "X-Priority: 0
";
        $headers .= "X-Mailer: bjm Formmail 
";
        $message = $content."

";

        if( !mail($recipient, $subject, $message, $headers))
        {
            echo "Sorry - an error occured trying to send the mail";
        }

    }

?>

Answer 1

You have to check wether the request method was POST. If so, you should send the email:

<?php

$recipient  =   '[e-mail]';

$email      =   $_REQUEST['Email'];

$subject    =   'Contact Form Submission';

$content    =   "The following has been submitted on your website 

";

$redirect   =   'thankyoupage.html';

$user = $_REQUEST['Email'];
$usersubject = "Subject";
$userheaders = "From: [e-mail]
";
$usermessage = "Blah blah blah";


foreach($_POST as $k=>$v)
    {
        $content .= "$k: $v

";
    }

if($_SERVER["REQUEST_METHOD"] == "POST") {
     mail_it(stripslashes($content), $subject, $email, $recipient);
}

if (isset($_POST['redirect']))
    {
        header("Location:".$_POST['redirect']);
    }
        else
    {
        header("Location: $redirect");
    }

function mail_it($content, $subject, $email, $recipient)
    {

        $headers .= "From: ".$email."
";
        $headers .= "Reply-To: ".$email."
";

        if ($bcc) $headers .= "Bcc: ".$bcc."
"; 

        $headers .= "X-Priority: 0
";
        $headers .= "X-Mailer: bjm Formmail 
";
        $message = $content."

";

        if( !mail($recipient, $subject, $message, $headers))
        {
            echo "Sorry - an error occured trying to send the mail";
        }

    }

?>

This makes it all happen:

if($_SERVER["REQUEST_METHOD"] == "POST") {
     mail_it(stripslashes($content), $subject, $email, $recipient);
}