【學習點滴-php】php ipv4常用功能封裝

<?php/** * @author :xiaoqing.huo * @date   :2012-12-05 * @param  :$ip==>ipv4 address,$netBit==>mask bits */class IpConfigure{private $ip;private $netBit;public function __construct($ip,$netBit){$this->ip = $ip;if(!($netBit>=0 && $netBit<=32)){$this->netBit = 32;}$this->netBit = $netBit;}//擷取網路號public function getSubnet(){return (long2ip((ip2long($this->ip)) & (ip2long($this->getMask()))));}//擷取ip地址public function getIp(){return $this->ip;}//擷取掩碼位元public function getNetBit(){return $this->netBit;}//擷取子網路遮罩public function getMask(){$maskBinStr =str_repeat("1", $this->netBit ) . str_repeat("0", 32-$this->netBit );$maskLong = bindec($maskBinStr);return long2ip($maskLong);}//擷取可用網路段，返回開始和結束ip地址public function getIpRange(){$maskBinStr =str_repeat("1", $this->netBit ) . str_repeat("0", 32-$this->netBit );      //net mask binary string$inverseMaskBinStr = str_repeat("0", $this->netBit ) . str_repeat("1",  32-$this->netBit ); //inverse mask  $ipLong = ip2long( $this->ip );$ipMaskLong = bindec( $maskBinStr );$inverseIpMaskLong = bindec( $inverseMaskBinStr );$netWork = $ipLong & $ipMaskLong; $start = $netWork + 1;//去掉網路號 ,主機地址為全0的地址 $end = ($netWork | $inverseIpMaskLong) -1 ; //去掉廣播位址，即主機地址全1的地址return array( long2ip($start), long2ip($end) );}//擷取廣播位址public  function broadcast(){return (long2ip(ip2long($this->getSubnet()) | (~(ip2long($this->getMask())))));}}$configure = new IpConfigure("10.31.144.0",22);echo "網路號：",$configure->getSubnet().PHP_EOL;echo "<pre>";echo "可用網段：";print_r($configure->getIpRange());echo "子網路遮罩：",$configure->getMask().PHP_EOL;echo "廣播位址：",$configure->broadcast().PHP_EOL;