PHP统计Apache.access-ip
<?php
$filename = "./access.txt";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize ($filename));
$rule = '/[\d]{2,3}\.[\d]{1,3}\.[\d]{1,3}\.[\d]{1,3}/';
preg_match_all($rule,$contents,$result);
//var_dump($result);
$count=array_unique($result[0]);
echo count($count);
fclose($handle);
?>