<?php
$ipaddress = $_SERVER['REMOTE_ADDR'];
$referer = $_SERVER['HTTP_REFERER'];
// The message
$message = "The visitor to your capture page.\r\nIP Address: " . $ipaddress . "\r\nReferer: " . $referer;
// In case any of our lines are larger than 70 characters, we should use wordwrap()
$message = wordwrap($message, 70);
$headers = 'From: my-email@domain.com' . "\r\n" .
'Reply-To: my-email@domain.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
// Send
mail('my-email@domain.com', 'My Visitor Info', $message, $headers);
?>