<?php
$start = ip2long('192.168.1.1');
$start = sprintf("%u", $start) ;
$end = ip2long('192.168.1.50');
$end = sprintf("%u", $end) ;
for ($start; $start<$end; $start++){
echo long2ip($start)."<br>";
}
?>
1、过滤标签(HTML)：strip_tags()
例如：
<?php
$text = '<?php ?><p>Test paragraph.</p><!-- Comment -
-> <a href=http://topic.csdn.net/u/20090311/09/"#fragment">Other text</a>';
echo strip_tags($text);
echo "\n";
// 允许使用<p>和<a>
echo stri ......
