A simple script to process emails sent via contact forms

process_contact.php

<?php

	$name = (isset($_REQUEST['name']) && !empty($_REQUEST['name'])) ? $_REQUEST['name']: null;

	$temp_email = (isset($_REQUEST['email']) && !empty($_REQUEST['email'])) ? $_REQUEST['email']: null;

	/* server side email address validation */
	$email = (filter_var($temp_email, FILTER_VALIDATE_EMAIL)) ? $temp_email: null;

	$subject = (isset($_REQUEST['subject']) && !empty($_REQUEST['subject'])) ? $_REQUEST['subject']: null;

	$message = (isset($_REQUEST['message']) && !empty($_REQUEST['message'])) ? nl2br(trim($_REQUEST['message'])): null;

	/* Additional email headers */
	$to = 'email@goeshere.com';
	$headers = 'From: ' . $name . '<' . $email . '>' . "\r\n" .
	'X-Mailer: PHP/' . phpversion();

	if ($name && $email && $subject && $message) {
		if (mail($to, $subject, $message, $headers)) {
			echo 'yes';
		}
		else {
			echo "no";
		}
	}

?>