php 基于TCP全连接的端口扫描脚本

> (32 - $net_mask) << (32 - $net_mask);
for ($i = 0;$i < $range;$i++) {
    $h = long2ip($start + $i);
    foreach ($ports as $p) {
        $c = @fsockopen($h, intval($p), $en, $es, $timeout);
        if (is_resource($c)) {
            echo $h.':'.$p.' => open\n';
            fclose($c);
        } else {
            echo $h.':'.$p.' => '.$es.'\n';
        }
        ob_flush();
        flush();
    }
}