PHP两秒钟跳转页面

function get_admin_msg2($$url, $$show = '操作已成功!') {
$$msg = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>消息提示 Powered by PHPYUN_JOB!</title>
<style>
a,a:visited{
color:#0066FF; text-decoration:none;
}
a:hover{
color:blue; text-decoration:underline;
}
</style>
</head>
<body style="font-size:12px;">
<div id="man_zone">
<table width="30%" border="0" align="center" cellpadding="0" cellspacing="1" class="table" style="margin-top:100px; border:#dfdfdf solid 1px;">
<tr>
<th height="25" align="center" style="background:url(../template/admin/images/maintopbg.png) repeat-x; border:#dfdfdf solid 1px;"><font style="font-size:12px;" color="red">'.$$show.'</font></th>
</tr>
<tr>
<td bgcolor="#FFFFFF" height="100" align="center"><p style="line-height:20px;">
&nbsp;2秒后窗口自动消失!<br /></td>
</tr>
</table>
</div>
</body>
</html>';
echo $$msg;
exit ();
}
}

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