php实现ip白名单黑名单功能
这个是一个检测ip是否非法的php函数,适应于白名单,黑名单功能开发,主要场景应用于:api来源限制,访问限制等.
代码如下:
/** * 安全IP检测,支持IP段检测 * @param string $ip 要检测的IP * @param string|array $ips 白名单IP或者黑名单IP * @return boolean true 在白名单或者黑名单中,否则不在 */ function is_safe_ip($ip="",$ips=""){ if(!$ip) $ip = get_client_ip(); //获取客户端IP if($ips){ if(is_string($ips)){ //ip用"," 例如白名单IP:192.168.1.13,123.23.23.44,193.134.*.* $ips = explode(",", $ips); } }else{ //读取后台配置 白名单IP $obj = new Setting(); $ips = explode(",", $obj->getConfig("whiteip")); } if(in_array($ip, $ips)){ return true; } $ipregexp = implode('|', str_replace( array('*','.'), array('\d+','\.') ,$ips)); $rs = preg_match("/^(".$ipregexp.")$/", $ip); if($rs) return true; return ; }
获取ip地址,这里引用thinkphp内置函数
代码如下:
//应网友要求,贴出 get_client_ip() 函数 /** * 获取客户端IP地址 * @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字 * @param boolean $adv 是否进行高级模式获取(有可能被伪装) * @return mixed */ function get_client_ip($type = 0,$adv=false) { $type = $type ? 1 : 0; static $ip = NULL; if ($ip !== NULL) return $ip[$type]; if($adv){ if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']); $pos = array_search('unknown',$arr); if(false !== $pos) unset($arr[$pos]); $ip = trim($arr[0]); }elseif (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip = $_SERVER['HTTP_CLIENT_IP']; }elseif (isset($_SERVER['REMOTE_ADDR'])) { $ip = $_SERVER['REMOTE_ADDR']; } }elseif (isset($_SERVER['REMOTE_ADDR'])) { $ip = $_SERVER['REMOTE_ADDR']; } // IP地址合法验证 $long = sprintf("%u",ip2long($ip)); $ip = $long ? array($ip, $long) : array('0.0.0.0', 0); return $ip[$type]; }
以上就是本文的全部内容了,希望对大家理解php检测IP有所帮助。

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