<tr>
<td valign="top">
<?
// check if the filename for the page exists
if (!file_exists("$page.inc"))
{
echo "<strong>Error - The page <?=$page?>".
"does not exist on this site.</strong>";
}
else
{
// 失掉页面的内容并把它放到一个字符串中
$fcontents = join('', file("$page.inc"));