wiki.techinc.nl/includes/UserMailer.php

<?php
/**
 * Provide mail capabilities
 *
 * @package MediaWiki
 */

/**
 * This function will perform a direct (authenticated) login to
 * a SMTP Server to use for mail relaying if 'wgSMTP' specifies an
 * array of parameters. It requires PEAR:Mail to do that.
 * Otherwise it just uses the standard PHP 'mail' function.
 *
 * @param string $to recipient's email
 * @param string $from sender's email
 * @param string $subject email's subject
 * @param string $body email's text
 */
function userMailer( $to, $from, $subject, $body ) {
	global $wgUser, $wgSMTP, $wgOutputEncoding, $wgErrorString;
	
  	$qto = wfQuotedPrintable( $to );
	
	if (is_array( $wgSMTP ))
	{
		require_once( 'Mail.php' );
		
		$timestamp = time();
	
		$headers['From'] = $from;
/* removing to: field as it should be set by the send() function below
   UNTESTED - Hashar */
//		$headers["To"] = $qto;
		$headers['Subject'] = $subject;
		$headers['MIME-Version'] = '1.0';
		$headers['Content-type'] = 'text/plain; charset='.$wgOutputEncoding;
		$headers['Content-transfer-encoding'] = '8bit';
		$headers['Message-ID'] = "<{$timestamp}" . $wgUser->getName() . '@' . $wgSMTP['IDHost'] . '>';
		$headers['X-Mailer'] = 'MediaWiki interuser e-mailer';
	
		// Create the mail object using the Mail::factory method
		$mail_object =& Mail::factory('smtp', $wgSMTP);
	
		$mailResult =& $mail_object->send($to, $headers, $body);
		
		# Based on the result return an error string, 
		if ($mailResult === true)
			return '';
		else if (is_object($mailResult))
			return $mailResult->getMessage();
		else
			return 'Mail object return unknown error.';
	}
	
	else
	{
		$headers =
			"MIME-Version: 1.0\n" .
			"Content-type: text/plain; charset={$wgOutputEncoding}\n" .
			"Content-transfer-encoding: 8bit\n" .
			"From: {$from}\n" .
			"X-Mailer: MediaWiki interuser e-mailer";

		$wgErrorString = '';
		set_error_handler( 'mailErrorHandler' );
		mail( $to, $subject, $body, $headers );
		restore_error_handler();

		return $wgErrorString;
	}
}

/**
 *
 */
function mailErrorHandler( $code, $string ) {
	global $wgErrorString;
	$wgErrorString = preg_replace( "/^mail\(\): /", "", $string );
}
?>