核心函数代码如下:
/** * 检测访问的ip是否为规定的允许的ip * Enter description here ... */ function check_ip(){ $ALLOWED_IP=array('192.168.2.*','127.0.0.1','192.168.2.49'); $IP=getIP(); $check_ip_arr= explode('.',$IP);//要检测的ip拆分成数组 #限制IP if(!in_array($IP,$ALLOWED_IP)) { 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则找到有一个匹配成功的就返回 return; die; } } }//end foreach header('HTTP/1.1 403 Forbidden'); echo "Access forbidden"; die; } } * 获得访问的IP * Enter description here ... */ function getIP() { return isset($_SERVER["HTTP_X_FORWARDED_FOR"])?$_SERVER["HTTP_X_FORWARDED_FOR"] :(isset($_SERVER["HTTP_CLIENT_IP"])?$_SERVER["HTTP_CLIENT_IP"] :$_SERVER["REMOTE_ADDR"]); }
在需要检测的地方 加上调用 check_ip(); 即可; 本函数提供只允许指定的IP访问文件,并提供IP中*号通配符 匹配多IP

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