<?php
function GetUserIP(){
    if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){
        //为了兼容百度的CDN，所以转成数组
        $arr = explode(',',$_SERVER['HTTP_X_FORWARDED_FOR']);
        return $arr[0];
    }else{
        return $_SERVER['REMOTE_ADDR'];
    }
}
?>

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