我有大约1000个IP地址。我使用下面的代码计算它们的IP范围:
public function ipRange($mainIp, $mask)
{
$mainIpLong = ip2long($mainIp);
$maskLong = ip2long($mask);
$netid = long2ip($mainIpLong & $maskLong);
$broadcast = long2ip($mainIpLong | ~$maskLong);
//here I insert $netid and $broadcast to a MySQL table
//so I have abount 1000 records
}
它正确计算IP范围,例如,如果我这样调用:
ipRange('91.99.98.243', '255.255.255.240');
结果将是:
$netid -> 91.99.98.240
$broadcast -> 91.99.98.255
现在我需要一个搜索功能。它应该找到给定IP地址的子范围,所以如果我调用search('91.99.98.249')
,search()函数应该显示netid为91.99.98.240且广播字段为91.99.98.255的记录。
我该怎么做?
答案 0 :(得分:0)
function find($ip){
//get $netid and $bcast from db one by one
//loop through all records
if(ip2long($ip)>=ip2long($netid) && ip2long($ip)<=ip2long($bcast) ){
echo $netid;
echo $bcast;
}
}
答案 1 :(得分:0)
我解决了。
注意:_getConnection()
函数连接到数据库。
ip_address
字段包括:IP,网络和广播。
public function search($ip)
{
$ranges = $this->_getConnection()->fetchAll("SELECT netid, broadcast FROM ip_address");
foreach($ranges as $range) {
$min = ip2long($range['netid']);
$max = ip2long($range['broadcast']);
if(ip2long($ip) > $min && ip2long($ip) < $max) {
$result = $this->_getConnection()->fetchAll("SELECT * FROM ip_address WHERE netid = ? AND broadcast = ?", array($range['netid'], $range['broadcast']));
}
}
return $result;
}