Inserting a Script into a PHP Variable

Question

Im building a mailing contact form for my site. Its PHP.

I want to know my visitors Screen Width and Height so Ive tried adding the Scripts to my $variable =; But Ive had no luck. Every email sends the variable as etc rather using the code to give me a result.

<head><style>
<?
$screenwidth = '<script type="text/javascript">document.write(screen.availWidth);</script>';
?>
</style></head>
<body>

<?php 
error_reporting(E_ALL);
ini_set('display_errors', 1);
if(isset($_POST['submit']))

{
$ipadd = $_SERVER['REMOTE_ADDR'];
$agent = $_SERVER['HTTP_USER_AGENT'];
$screen = "$screenwidth";
$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$mobile = $_POST['mob'];
$address = $_POST['addr'];
$formcontent="$name \n$mobile \n$address \r\nMessage: $message \r\nBrowser: $agent \nIP: $ipadd \n $screen \r\n";
$recipient = "";
$subject = $_POST['subject'];
$mailheader = "From: $email \r\n";
mail($recipient, $subject, $formcontent, $mailheader) or die("Error!");

echo "<h3>Thank You!</h3><h4>Expect a response within 24 hours</h4>";
}
?>

Not having any luck. Could someone let me know my error? Cheers

At the time of rendering the form, you could write screen dimensions to hidden input fields which you can then get with `$_POST['screen_width']` and `$_POST['screen_height']` — Junaid, Jul 08 '17 at 08:32
Possible duplicate of [What is the difference between client-side and server-side programming?](https://stackoverflow.com/questions/13840429/what-is-the-difference-between-client-side-and-server-side-programming) — jmattheis, Jul 08 '17 at 08:46
You need to learn how JS works. No necessarily will this work ``. You can do this, `` then at footer, after page load, try this `` — Junaid, Jul 08 '17 at 08:56
Ive tried what you said Junaid - I created a hidden input id=screen-width and name=screen-width. Added the script last on my page but still within the body. I also created a variable in my — Sage Woodhouse, Jul 08 '17 at 09:17

score 1 · Answer 1 · edited Jul 08 '17 at 20:25

<head>
    <style>
    </style>
</head>
<body>

<?php 
    error_reporting(E_ALL);
    ini_set('display_errors', 1);

    if(isset($_POST['submit'])) {
        $ipadd = $_SERVER['REMOTE_ADDR'];
        $agent = $_SERVER['HTTP_USER_AGENT'];

        $screen = '<script type="text/javascript">document.write(screen.availWidth);</script>';
        $name = $_POST['name'];
        $email = $_POST['email'];
        $message = $_POST['message'];
        $mobile = $_POST['mob'];
        $address = $_POST['addr'];
        $formcontent="$name \n$mobile \n$address \r\nMessage: $message \r\nBrowser: 
        $agent \nIP: $ipadd \n $screen \r\n";
        $recipient = "";
        $subject = $_POST['subject'];
        $mailheader = "From: $email \r\n";
        mail($recipient, $subject, $formcontent, $mailheader) or die("Error!");
        echo "<h3>Thank You!</h3><h4>Expect a response within 24 hours</h4>";
    }
?>

Please take a look at [How to write a good answer?](https://stackoverflow.com/help/how-to-answer) — Junaid, Jul 08 '17 at 12:05

Inserting a Script into a PHP Variable

1 Answers1