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直接见代码:
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;
}
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原文地址:http://my.oschina.net/u/237722/blog/376823