phpmailer アプリケーションのヘルプ

<?phprequire("class.phpmailer.php");	function sendEmail($from = '3855122@163.com',$who ='Michaelssss',$To = '123456@qq.com',$body = 'BBB')	{		$mail = new PHPMailer;		$mail->Host = "smtp.163.com";		$mail->Port = 25;		$mail->SMTPAuth = true;		$mail->SMTPDebug = 1;				$mail->Username = '3855122@163.com';		$mail->Password = 'xxxxxxx';				$mail->From = $from;		$mail->FromName = $who;				$mail->AddAddress($To,$who);		$mail->WordWrap = 50;				$mail->IsHTML(true);				$mail->Subject = 'TEST';		$mail->Body = $body;		if(!$mail->Send())		{			echo $mail->ErrorInfo;			exit;		}		else		echo 'Ok';	}	sendEmail();?>