php实现图形显示Ip地址的代码

<?<span php 
</span><span header</span>("Content-type: image/gif"<span ); 
</span><span $im</span> = imagecreate(130,15<span ); 
</span><span $background_color</span> = ImageColorAllocate (<span $im</span>, 255, 255, 255<span ); 
</span><span unset</span>(<span $ip</span><span ); 
</span><span if</span>(<span $_SERVER</span>['HTTP_CLIENT_IP'<span ]){ 
</span><span $ip</span>=<span $_SERVER</span>['HTTP_CLIENT_IP'<span ]; 
} </span><span else</span> <span if</span>(<span $_SERVER</span>['HTTP_X_FORWARDED_FOR'<span ]){ 
</span><span $ip</span>=<span $_SERVER</span>['HTTP_X_FORWARDED_FOR'<span ]; 
} </span><span else</span><span { 
</span><span $ip</span>=<span $_SERVER</span>['REMOTE_ADDR'<span ]; 
} </span><span //</span><span  www.jbxue.com</span>
<span $col</span> = imagecolorallocate(<span $im</span>, 0, 51, 102<span ); 
imagestring(</span><span $im</span>, 3, 5, 1, <span $ip</span> , <span $col</span><span ); 
imagegif(</span><span $im</span><span ); 
imagedestroy(</span><span $im</span><span ); 
</span>?>