<?php
/* recipients */
$to  = "[email protected]" . ", " ; // note the comma
$to .= "[email protected]";/* subject */
$subject = "Birthday Reminders for August";/* message */
$message = '
<html>
<head>
<title>Birthday Reminders for August</title>
</head>
<body>
<p>Here are the birthdays upcoming in August!</p>
<table>
<tr>
  <th>Person</th><th>Day</th><th>Month</th><th>Year</th>
</tr>
<tr>
  <td>Joe</td><td>3rd</td><td>August</td><td>1970</td>
</tr>
<tr>
  <td>Sally</td><td>17th</td><td>August</td><td>1973</td>
</tr>
</table>
</body>
</html>
';/* To send HTML mail, you can set the Content-type header. */
$headers  = "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";/* additional headers */
$headers .= "To: Mary <[email protected]>, Kelly <[email protected]>\r\n";
$headers .= "From: Birthday Reminder <[email protected]>\r\n";
$headers .= "Cc: [email protected]\r\n";
$headers .= "Bcc: [email protected]\r\n";/* and now mail it */
mail($to, $subject, $message, $headers);
?> php manual 里的例子!在header里你要指定text/html