面试题6 写出显示客户端IP与服务器IP的代码
【分析】
<?php
function get_client_ip() {#
if(getenv('HTTP_CLIENT_IP')) {
$client_ip = getenv('HTTP_CLIENT_IP');
} elseif(getenv('HTTP_X_FORWARDED_FOR')) {
$client_ip = getenv('HTTP_X_FORWARDED_FOR');
} elseif(getenv('REMOTE_ADDR')) {
$client_ip = getenv('REMOTE_ADDR');
} else {
$client_ip = $HTTP_SERVER_VAR['REMOTE_ADDR'];
}
return $client_ip;
}
//
服务器IP
function get_server_ip(){
if (isset($_SERVER))
{
if($_SERVER['SERVER_ADDR']) $huoqu_ip=$_SERVER['SERVER_ADDR'];
else $huoqu_ip=$_SERVER['LOCAL_ADDR'];
}
else
{
$huoqu_ip=getenv('SERVER_ADDR');
}
return $huoqu_ip;
}
echo get_client_ip();
echo get_server_ip();
?>
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