如何通过PHP准确获取网站访问者的IP地址？

本文共计90个文字，预计阅读时间需要1分钟。

phpfunction get_client_ip() { if (strcasecmp(getenv(HTTP_CLIENT_IP), unknown)==0) { $ip=getenv(HTTP_CLIENT_IP); } else if (strcasecmp(getenv(HTTP_X_FORWARDED_FOR), unknown)==0) { $ip=getenv(HTTP_X_FORWARDED_FOR); } return $ip;}

function get_client_ip() { if (getenv("HTTP_CLINET_IP") && strcasecmp(getnenv("HTTP_CLINET_IP")), "unknown") { $ip = getenv("HTTP_CLINET_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; }