php 获取当前用户的IP

代码如下：

<span style="color: #000000;">php
   </span><span style="color: #0000ff;">if</span>(<span style="color: #800080;">$_SERVER</span>['HTTP_CLIENT_IP'<span style="color: #000000;">]){
     </span><span style="color: #800080;">$onlineip</span>=<span style="color: #800080;">$_SERVER</span>['HTTP_CLIENT_IP'<span style="color: #000000;">];
}</span><span style="color: #0000ff;">elseif</span>(<span style="color: #800080;">$_SERVER</span>['HTTP_X_FORWARDED_FOR'<span style="color: #000000;">]){
     </span><span style="color: #800080;">$onlineip</span>=<span style="color: #800080;">$_SERVER</span>['HTTP_X_FORWARDED_FOR'<span style="color: #000000;">];
}</span><span style="color: #0000ff;">else</span><span style="color: #000000;">{
     </span><span style="color: #800080;">$onlineip</span>=<span style="color: #800080;">$_SERVER</span>['REMOTE_ADDR'<span style="color: #000000;">];
}
</span><span style="color: #008000;">/*</span><span style="color: #008000;"> 何问起 hovertree.com </span><span style="color: #008000;">*/</span>

<span style="color: #0000ff;">echo</span> <span style="color: #800080;">$onlineip</span><span style="color: #000000;">;

</span>?>

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