PHP获取给定IP网段信息
Aug 11
Web|PHP|MySQL|jQuery No Comments
刚写了段代码, 主要功能是通过给定的网段信息(如10.0.0.1/22), 获取该网段的起始IP地址, 掩码IP地址和广播地址等的信息. 写这段代码的目的是做IP地址查询, 主要用于查询大型集团式企业日志服务器中成百上千个设备中的某一个是归属于哪一个分支企业的(分支企业按一定规则划分了不同的网段). 代码如下:
php
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | <?php /* * Leon * http://nerrsoft.com * leon@nerrsoft.com * 2010-08-11 */ class ipInfo{ //根据给定的IP字串获取IP信息 public function getIpInfo($ipStr){ if(!$this->valid($ipStr)){ return false; } $ipArr = explode('/', $ipStr); //information $info['ipStr'] = $ipStr; $info['bin']['mask'] = $this->getSubnetMask($ipArr[1]); $info['ip']['mask'] = $this->bin2ip($info['bin']['mask']); $info['long']['mask'] = ip2long($info['ip']['mask']); $info['bin']['net'] = $this->ip2bin($ipArr[0]) & $info['bin']['mask']; $info['ip']['net'] = $this->bin2ip($info['bin']['net']); $info['long']['net'] = ip2long($info['ip']['net']); $info['ip']['begin'] = long2ip($info['long']['net']+1); $info['bin']['begin'] = $this->ip2bin($ipArr[0]); $info['long']['begin'] = ip2long($info['ip']['begin']); $info['ip']['end'] = long2ip(abs($info['long']['mask'])+$info['long']['begin']-3); $info['bin']['end'] = $this->ip2bin($info['ip']['end']); $info['long']['end'] = ip2long($info['ip']['end']); $info['ip']['broacast'] = long2ip($info['long']['end']+1); $info['bin']['broacast'] = $this->ip2bin($info['ip']['broacast']); $info['long']['broacast'] = ip2long($info['ip']['broacast']); return $info; } //验证IP字串格式有效性 10.0.0.1/24 private function valid($ipStr){ if(preg_match("/^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\/\d{1,2}$/", $ipStr)){ return true; }else{ return false; } } //获取二进制 private function get_bin($number){ return str_pad(decbin($number),8,'0',STR_PAD_LEFT); return decbin($number); } //IP地址转二进制 private function ip2bin($ip){ $ip_octets = split("\.", $ip); unset($bin_sn); foreach($ip_octets as $val){ $bin_sn[] = $this->get_bin($val); } return join(".", $bin_sn); } //二进制转IP地址 private function bin2ip($ip){ $ip_octets = split("\.", $ip); unset($bin_sn); foreach($ip_octets as $val){ $bin_sn[] = bindec($val); } return join(".", $bin_sn); } //获取子网掩码 private function getSubnetMask($mask){ for($i=1; $i<=32; $i++){ if($i<=$mask){ $maskStr .= '1'; }else{ $maskStr .= '0'; } if($i%8==0){ $maskStr .= '.'; } } $maskStr = substr($maskStr, 0, -1); return $maskStr; } } //example $ip = new ipInfo(); $result = $ip->getIpInfo('10.229.8.10/22'); print_r($result); ?> |
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