ip地址怎么转换为IPCDBL

ip地址如何转换为IPCDBL
ip地址如何转换为IPCDBL?
如192.168.1.255转换后是3232236031,
求ip转换为ipcdbl的算法和ipcdbl转换为ip的算法

------解决方案--------------------

PHP code

<?phpfunction iptolong($ip){    $key = explode('.', $ip);    if(count($key) >= 4){        $long = intval($key[0]) * 16777216 + intval($key[1]) * 65536 + intval($key[2]) * 256 + intval($key[3]);    }    return $long;}function longtoip($long){    $long = floor($long);    $p4 = $long - floor($long / 256) * 256;    $long = ($long - $p4) / 256;    $p3 = $long - floor($long / 256) * 256;    $long = ($long - $p3) / 256;    $p2 = $long - floor($long / 256) * 256;    $long = ($long - $p2) / 256;    $p1 = $long;    $ip = $p1.'.'.$p2.'.'.$p3.'.'.$p4;    return $ip;}?><div class="clear">
                 
              
              
        
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