简单的php获取IP地址的函数：

/**获取IP*/functionGetIp(){if(getenv('HTTP_CLIENT_IP')){$IP=getenv('HTTP_CLIENT_IP');}elseif(getenv('HTTP_X_FORWARDED_FOR')){$IP=getenv('HTTP_X_FORWARDED_FOR');}elseif(getenv('HTTP_X_FORWARDED')){$IP=getenv('HTTP_X_FORWARDED');}elseif(getenv('HTTP_FORWARDED_FOR')){$IP=getenv('HTTP_FORWARDED_FOR');}elseif(getenv('HTTP_FORWARDED')){$IP=getenv('HTTP_FORWARDED');}else{$IP=$_SERVER['REMOTE_ADDR'];}if(isset($_GET['debug'])){return$_GET['debug'];}return$IP;}