Having Users IP Address Showing In My Email Form

Question

Hello I have created an email form but am very unfamiliar with how to code in a section that displays a users IP address in the email that is sent. Here is my code.

There is no code related to IP addresses in your question. What have you tried? — Drakes, Jun 14 '15 at 23:09
Not sure where to start. I've never worked with IP addresses in code before. I tried to google it but had no luck. — Endô Fujimoto, Jun 14 '15 at 23:09
You want to include your IP address from the email server, or you want to put the recipient's IP address in the email body? — Drakes, Jun 14 '15 at 23:11
I would like to put the recipients ip address in the email body — Endô Fujimoto, Jun 14 '15 at 23:12
IP does not uniquely identify a user, so its kind of useless — , Jun 14 '15 at 23:15
I want it in there though because I have always wanted to try it out. Any help would be much appreciated — Endô Fujimoto, Jun 14 '15 at 23:15

score 1 · Accepted Answer · edited May 23 '17 at 11:51

1

You can't be sure of the real IP of the person using your email form because they could be behind a proxy or VPN, but this is a way to get the best candidate IP address at the time of the visit (ref):

function getUserIP() {
    $client  = @$_SERVER['HTTP_CLIENT_IP'];
    $forward = @$_SERVER['HTTP_X_FORWARDED_FOR'];
    $remote  = $_SERVER['REMOTE_ADDR'];

    if(filter_var($client, FILTER_VALIDATE_IP)) {
        $ip = $client;
    } else if(filter_var($forward, FILTER_VALIDATE_IP)) {
        $ip = $forward;
    } else {
        $ip = $remote;
    }
    return $ip;
}

Then you can add the IP information to your email body with

$myMessage .= "Sent from IP: " . getUserIP() . ".";

Further reading: What is the difference between HTTP_CLIENT_IP and HTTP_X_FORWARDED_FOR?

edited May 23 '17 at 11:51

Community

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answered Jun 14 '15 at 23:15

Drakes

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Hi Drakes how would I go about adding that php code to this, – Endô Fujimoto Jun 14 '15 at 23:23
$myMessage = $myNameLabel .' '. $_POST["m_name".$unique_id].', '. $myEmailLabel .' '. $_POST["m_email".$unique_id].', '. date("r"); – Endô Fujimoto Jun 14 '15 at 23:24
`$myMessage .=` (notice the dot) appends more text to `$myMessage`, so you can use the line supplied in my answer to add the IP info to end of your message. – Drakes Jun 14 '15 at 23:26
Alternatively, `$myMessage = $myNameLabel .' '. $_POST["m_name".$unique_id].', '. $myEmailLabel .' '. $_POST["m_email".$unique_id].', '. date("r") . ', ' . getUserIP();` – Drakes Jun 14 '15 at 23:27
@EndôFujimoto How did that work out for you? – Drakes Jun 15 '15 at 15:23
Worked fantastic. Sorry mate for not replying. Really appreciate the help – Endô Fujimoto Jun 15 '15 at 23:07

Having Users IP Address Showing In My Email Form

1 Answers1