php简单防刷计数器

<?phprequire_once('config.php');function counter(){ session_start();$sql='select counter from counter';$result=@mysql_query($sql);if(!empty($result)){ $row=mysql_fetch_array($result); $counter=++$row[counter]; if(!$_SESSION['counter']) { $query='update counter set counter=$counter'; $result=@mysql_query($query); if($result) { $_SESSION['counter']=true; } } $counter_len=strlen($counter); for($i=0;$i<$counter_len;$i++) { $number=substr($counter,$i,1); if(isset($number)) { echo '<img src='https://www.haobala.com/bcjs/image/'.$number.'.gif'>'; } }}}?> 我那小网站现在访问量到达了 310-301; 。呵呵庆祝一下