使用 echo 输出大量 html.

<?php
$id=123456;
echo <<< html
                <table width=80% border="2" cellpadding="3" cellspacing="0" bordercolor="#808080">
                <tr bgcolor="#84A9E1">
                <td align="center">ClassID $id</td>
                <td align="center">stuno</td>
                <td  align="center">学生姓名</td>
                <td align="center">家长姓名</td>
                <td align="center">家长手机号</td>
                </tr>
html;

?>