How to Modify From Address in Email Sent From mailer.php

programming
1

I need to modify the From Address in the Email Sent From mailer.php to the user’s supplied email address, so that I can just reply to their email, rather than having to compose a new email to the user’s email address. How can I modify that? Here is a link to my form page and PHP code below:

http://tbs-inc.com/proposal.html

<?PHP
$to = "btraylor@tbs-inc.com, cwalters@tbs-inc.com";
$subject = “Proposal Inquiry from TBS-Inc.com”;
$headers = “From: Form Mailer”;
$forward = 1;
$location = “thanks.html”;

$date = date (“l, F jS, Y”);
$time = date (“h:i A”);

$msg = "You have received a proposal request from the TBS website. It was submitted on $date at $time.

";

if ($_SERVER[‘REQUEST_METHOD’] == “POST”) {
foreach ($_POST as $key => $value) {
$msg .= ucfirst ($key) ." : ". $value . "
“;
}
}
else {
foreach ($_GET as $key => $value) {
$msg .= ucfirst ($key) .” : ". $value . "
";
}
}

mail($to, $subject, $msg, $headers);
if ($forward == 1) {
header (“Location:$location”);
}
else {
echo “Thank you for submitting our form. We will get back to you as soon as possible.”;
}

?>