代码如下：
<?<span>php
</span><span>if</span>(<span>$_SERVER</span>['HTTP_CLIENT_IP'<span>]){
</span><span>$onlineip</span>=<span>$_SERVER</span>['HTTP_CLIENT_IP'<span>];
}</span><span>elseif</span>(<span>$_SERVER</span>['HTTP_X_FORWARDED_FOR'<span>]){
</span><span>$onlineip</span>=<span>$_SERVER</span>['HTTP_X_FORWARDED_FOR'<span>];
}</span><span>else</span><span>{
</span><span>$onlineip</span>=<span>$_SERVER</span>['REMOTE_ADDR'<span>];
}
</span><span>/*</span><span> 何问起 hovertree.com </span><span>*/</span>
<span>echo</span> <span>$onlineip</span><span>;
</span>?>推荐：http://www.cnblogs.com/roucheng/p/phpexcel.html
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