说明:
检测一个IP地址是否在规定网段内的类。IP在指定IP段范围内的话返回TRUE和信息“IP检测通过”,IP不在IP段范围内则返回FALSE和错误信息,错误信息可以从属性“msg”中获得,详见用法和代码。
用法:
例、检测“192.168.1.45”是否在“192.168.1.1-192.168.1.254”内:
$ipCheck = new ipCheck('192.168.1.1-192.168.1.254'); echo (TRUE === $ipCheck ->check('192.168.1.45')) ? '在范围内' : $ipCheck->msg;
$ipCheck = new ipCheck('192.168.1.1-254'); echo (TRUE === $ipCheck ->check('192.168.1.45')) ? '在范围内' : $ipCheck->msg;
$ipCheck = new ipCheck('192.168.1.1/24'); echo (TRUE === $ipCheck ->check('192.168.1.45')) ? '在范围内' : $ipCheck->msg;
<?php /** * 说明:检测IP是否在IP段内 * 作者:upall,http://upall.cn/ * 日期:13:50 2011年5月28日 星期六 * 用法:$ipCheck = new ipCheck('192.168.1.1-254'); * echo (TRUE === $ipCheck ->check('192.168.1.45')) ? 'PASS' : $ipCheck->msg; * 或者: * $ipCheck = new ipCheck('192.0.0.1-192.254.254.254'); * echo (FALSE !== $ipCheck ->check('192.168.10.45')) ? 'PASS' : $ipCheck->msg; * 或者: * $ipCheck = new ipCheck('192.168.1.1/24'); * echo (FALSE !== $ipCheck ->check('192.168.10.45')) ? 'PASS' : $ipCheck->msg; */ class ipCheck { public $ipRangeStr = '10.0.0.1/8'; public $msg = ''; function __construct($ipRangeStr){ !empty($ipRangeStr) ? $this->ipRangeStr = $ipRangeStr : ''; } function check($ip = '') { empty($ip) && $ip = $this->getClientIp(); # 判断检测类型 if (FALSE !== strpos($this->ipRangeStr,'-')){ $type = 'size'; // 简单比大小:10.0.0.1-254 OR 10.0.0.1-10.0.0.254 }else if(FALSE !== strpos($this->ipRangeStr,'/')){ $type = 'mask'; // 掩码比大小:10.0.0.1/24 }else{ $this->msg = '错误的IP范围值'; return FALSE; } # 分析IP范围 if ('size' === $type){ $ipRangeStr = explode('-',$this->ipRangeStr); $ipAllowStart = $ipRangeStr[0]; $ipAllowEnd = $ipRangeStr[1]; if (FALSE === strpos($ipAllowEnd,'.')){ # 10.0.0.254 OR 254 $ipAllowElmArray = explode('.',$ipAllowStart); $ipAllowEnd = $ipAllowElmArray[0] . '.' . $ipAllowElmArray[1] . '.' . $ipAllowElmArray[2] . '.' . $ipAllowEnd; } }else if ('mask' === $type){ $ipRangeStr = explode('/',$this->ipRangeStr); $ipRangeIP = $ipRangeStr[0]; # 获取掩码中最后一位非零数的值 $ipRangeMask = (int)$ipRangeStr[1]; $maskElmNumber = floor($ipRangeMask/8); # 保留IP前几段 $maskElmLastLen = $ipRangeMask % 8; # 255.255.here.0 $maskElmLast = str_repeat(1,8-$maskElmLastLen); $maskElmLast = bindec($maskElmLast); # 掩码中IP末段最大值(十进制) // 获取IP段开始、结束值 $ipRangeIPElmArray = explode('.',$ipRangeIP); if (0 == $maskElmNumber){ $ipAllowStart = '0.0.0.0'; $ipAllowEnd = $maskElmLast . '.254.254.254'; }else if (1 == $maskElmNumber){ $ipAllowStart = $ipRangeIPElmArray[0] . '.' . '0.0.0'; $ipAllowEnd = $ipRangeIPElmArray[0] . '.' . $maskElmLast . '.254.254'; }else if (2 == $maskElmNumber){ $ipAllowStart = $ipRangeIPElmArray[0] . '.' . $ipRangeIPElmArray[1] . '.' . '0.0'; $ipAllowEnd = $ipRangeIPElmArray[0] . '.' . $ipRangeIPElmArray[1] . '.' . $maskElmLast . '.254'; }else if (3 == $maskElmNumber){ $ipAllowStart = $ipRangeIPElmArray[0] . '.' . $ipRangeIPElmArray[1] . '.' . $ipRangeIPElmArray[2] . '.' . '0'; $ipAllowEnd = $ipRangeIPElmArray[0] . '.' . $ipRangeIPElmArray[1] . '.' . $ipRangeIPElmArray[2] . '.' . $maskElmLast; }else if (4 == $maskElmNumber){ $ipAllowEnd = $ipAllowStart = $ipRangeIP; }else{ $this->msg = '错误的IP段数据'; return $this->msg; } }else{ $this->msg = '错误的IP段类型'; return $this->msg; } // 检测IP $ipAllowStart = $this->getDecIp($ipAllowStart); $ipAllowEnd = $this->getDecIp($ipAllowEnd); $ip = $this->getDecIp($ip); if (!empty($ip)){ if ($ip <= $ipAllowEnd && $ip >= $ipAllowStart){ $this->msg = 'IP检测通过'; return TRUE; }else{ $this->msg = '此为被限制IP'; return FALSE; } }else{ FALSE === ($this->msg) && $this->msg == '没有提供待检测IP'; // getClentIp() 是否返回false return $this->msg; // 没有获取到客户端IP,返回 } } // 10进制IP function getDecIp($ip){ $ip = explode(".", $ip); return $ip[0]*255*255*255+$ip[1]*255*255+$ip[2]*255+$ip[3]; } // 获取客户端IP function getClientIp(){ if(isset($_SERVER['REMOTE_ADDR'])){ return $_SERVER['REMOTE_ADDR']; }else{ $this->msg = '不能获取客户端IP'; return FALSE; } } } ?>
转自 https://blog.upall.cn/531.html
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