将$ _POST变量分配给PHP Mailer（）参数

Question

How can one assign $_POST variables to the PHP mailer() 'From:' header parameter?

Here's what I tried:

$toEmail="[e-mail]";
$formSubject=$_POST["esubject"];
$formComment=$_POST["comment"];
$header= 'From: $_POST["eaddress"]';

mail($toEmail, $formSubject, $formComment, $header)) {

The subject and comments are working correctly, but the From: turns the variable into a string.

Answer 1

$header= 'From:' . $_POST["eaddress"];

In your code, $_POST["eaddress"] was in a single quote, it would not be evaluated.