本来是写了几个函数,IP黑名单是记到库里的,为了方便理解,改成了一个class把IP黑名单写了出来。
192.168.1.1 单个IP
192.168.1.* 这样代理 192.168.1.1-192.168.1-255
192.158.1.2-20 这样是代表192.158.1.2-192.158.1.20
也可以这样写 192.168.1.[1|2|3]
嘿嘿~一个方法不知道想法是否周全,拿出来大家讨论
使用
以下是引用片段: $oBlock_ip = new block_ip(); $oBlock_ip->checkIP(); |
以下是引用片段: <?php class block_ip { var $Block_ip = array("192.168.1.1","210.10.2.1-20","222.34.4.*"); function __construct(){ } function __destruct(){ } private function makePregIP($str){ if (strstr($str,"-")) { $aIP = explode(".",$str); foreach ($aIP as $k=>$v) { if (!strstr($v,"-")) { $preg_limit .= makePregIP($v); } else{ $aipNum = explode("-",$v); for($i=$aipNum[0];$i<=$aipNum[1];$i++){ $preg .=$preg?"|".$i:"[".$i; } $preg_limit .=strrpos($preg_limit,".",1)==(strlen($preg_limit)-1)?$preg."]":".".$preg."]"; } } }else{ $preg_limit .= $str."."; } return $preg_limit; } private function getAllBlockIP(){ if ($this->Block_ip) { foreach ($this->Block_ip as $k=>$v) { $ipaddres = $this->makePregIP($v->start_ip); $ip = str_ireplace(".","\.",$ipaddres); $ip = str_replace("*","[0-9]{1,3}",$ip); $ipaddres = "/".$ip."/"; $ip_list[] = $ipaddres; } } return $ip_list; } public function checkIP() { $iptable = $this->getAllBlockIP(); $IsJoined = true; //取得用户ip $Ip = $this->get_client_ip(); $Ip = trim($Ip); //剔除黑名单中的IP区段 if ($iptable) { foreach($iptable as $value) { if (preg_match("{$value}",$Ip)) { $IsJoined = false; break; } } } //如果在ip黑名单中就执行如下操作 if( !$IsJoined ){ echo "IP Error"; exit; } } private function get_client_ip(){ if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")) $ip = getenv("HTTP_CLIENT_IP"); else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")) $ip = getenv("HTTP_X_FORWARDED_FOR"); else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")) $ip = getenv("REMOTE_ADDR"); else if (isset($_SERVER[’REMOTE_ADDR’]) && $_SERVER[’REMOTE_ADDR’] && strcasecmp($_SERVER[’REMOTE_ADDR’], "unknown")) $ip = $_SERVER[’REMOTE_ADDR’]; else $ip = "unknown"; return($ip); } } ?> |