原理根据用户给出的ip,再获取当前IP然后转换成数字型的,根据IP,a,b,c类进行计算,根据进行对比就OK
<script>ec(2);</script>
代码如下 | 复制代码 |
$start =ipToInt('192.168.1.110'); $end = ipToInt('192.168.0.1'); $ipInt = ipToInt( get() ); $result = false; if ($ipInt>=$start && $ipInt $result = true; } if( $result ) { echo '在同一网段'; } else { echo '不在同一网段'; } |
//不在同一网段
/*
* IP转成整形数值
* @param string $ip IP
* @return int
*/
代码如下 | 复制代码 |
function ipToInt($ip) { $ips教程 = explode('.',$ip); if (count($ips)>=4) { $int = $ips[0]*256*256*256+$ips[1]*256*256+$ips[2]*256+$ips[3];//根据IP,a,b,c类进行计算 } else { throw new Exception('ip is error'); } return $int; } |
/*
* 获取用户IP地址 192.68.0.110
*/
代码如下 | 复制代码 |
function get() { if ($_SERVER['HTTP_CLIENT_IP'] && $_SERVER['HTTP_CLIENT_IP']!='unknown') { $ip = $_SERVER['HTTP_CLIENT_IP']; } elseif ($_SERVER['HTTP_X_FORWARDED_FOR'] && $_SERVER['HTTP_X_FORWARDED_FOR']!='unknown') { $ip = $_SERVER['HTTP_X_FORWARDED_FOR']; } else { $ip = $_SERVER['REMOTE_ADDR']; } return $ip; } /* |
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