php - How to send an email notification when a page is visited?

Question

Is there a way to send an email notification if a certain page is visited?
(Triggers an email saying the page was viewed)

Ie. User comes to this page: thank-you.php
And email is automatically sent to the admin of the website upon page load.
Then the user gets redirected to another page right after this email trigger as been sent.

EDIT --- I would need to check if a user came from a specific domain name or URL.
This is to avoid exploits or other misc. submission hacks.

Any suggestions?

Answer 1

Try:

<?php
// The message
$message = "Line 1
Line 2
Line 3";

// In case any of our lines are larger than 70 characters, we should use wordwrap()
$message = wordwrap($message, 70);

// Send
mail('admin@example.com', 'My Subject', $message);

// Redirect
header('Location: anotherpage.php');
?>