Просмотр поста

принцип такой

$t = time() + 60 * 60;
if (!file_exists('tmp.txt') {
$cnt = mysql_result(mysql_query("select count(*) from `tb`";"), 0);
echo $cnt;
file_put_contents('tmp.txt', $cnt . '-' . $t);
} elseif (end(explode('-', file_get_contents('tmp.txt')) < time()) {
$cnt = mysql_result(mysql_query("select count(*) from `tb`";"), 0);
file_put_contents('tmp.txt', $cnt . '-' . $t);
echo $cnt;
} else {
$tmp = explode('-', file_get_contents('tmp.txt');
echo $tmp[0];
}