How to restrict IP access in php
How to restrict IP access in php:
//获取客户端ip if (getenv("HTTP_CLIENT_IP")) $ip = getenv("HTTP_CLIENT_IP"); else if(getenv("HTTP_X_FORWARDED_FOR")) $ip = getenv("HTTP_X_FORWARDED_FOR"); else if(getenv("REMOTE_ADDR")) $ip = getenv("REMOTE_ADDR"); else $ip = "Unknow"; $ALLOWED_IP=array('10.144.39.132'); //允许访问的ip $check_ip_arr= explode('.',$ip); //ip参数拆分成数组 if(!in_array($ip,$ALLOWED_IP)) { $bl=false; foreach ($ALLOWED_IP as $val){ if(strpos($val,'*')!==false){ //发现有*号替代符 $arr=array(); $arr=explode('.', $val); $bl=true; //用于记录循环检测中是否有匹配成功的 for ($i=0;$i<4;$i++){ if($arr[$i]!='*'){ //不等于* 就要进来检测,如果为*符号替代符就不检查 if($arr[$i]!=$check_ip_arr[$i]){ $bl=false; break; //终止检查本个ip 继续检查下一个ip } } } //end for if($bl){ //如果是true则终止匹配 break; } } } //end foreach if(!$bl){ $return=array( 'status'=>2, 'msg'=>'该IP无权限访问', 'data'=>$ip ); echo json_encode($return); exit(); } }
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