PHP获取DHCP分配的本机IP
在搭建本地环境的时候,需要用到多个设备,有服务器、打印机连接接设备等。因为DHCP动态分配IP,所以每次重连都会发生IP地址的变更。
解决办法就是将每个设备的本机IP上传到统一的地方保存。因为使用REMOTE_ADDR和HTTP_X_FORWARDED_FOR等方法获取到的有可能是客户端使用的代理服务器的IP地址,并非真正的本机IP,解决办法就是针对mac下的查看IP地址命令:ifconfig
和 windows下的ipconfig
,然后使用正则表达式从中获取到ip地址信息。
主要用到正则和exec方法。
<?php
$server = 'http://server.com/admin.php/xxx';
$agent = $_SERVER['HTTP_USER_AGENT'];
$os = '';
if (strpos($agent, 'Macintosh') !== false) {
$os = 'mac';
}else{
$os = 'win';
}
switch ($os) {
case 'mac':
uploadMacIP();
break;
case 'win':
uploadWinIP();
default:
echo '未知操作系统类型';
break;
}
function uploadMacIP()
{
exec("whereis ifconfig",$out);
$command = $out[0]." en0";
exec($command, $output);
$ip = '';
foreach ($output as $k => $v) {
if(preg_match("/inet [0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/", $v, $matches)){
if($matches[0]){
$ip = str_replace("inet ", "", $matches[0]);
}
}
}
if(!empty($ip)){
uploadIP($ip,'mac');
}
}
function uploadWinIP()
{
$command = "ipconfig";
exec($command, $output);
$ip = '';
foreach ($output as $k => $v) {
if(preg_match("/[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/", $v, $matches)){
if($matches[0]){
$ip = $matches[0];
}
}
}
if(!empty($ip)){
uploadIP($ip,'win');
}
}
function uploadIP($ip,$os)
{
$type = ['mac'=>1,'win'=>2];
$data = [
'ip' => $ip,
'type' => $type[$os],
];
$url = $server.'/add-ip';
if(curl_post($url, $data)){
echo '<h1>IP地址上传成功</h1>';
}else{
echo '<h1>IP地址上传失败</h1>';
}
}
function curl_post($url,$data)
{
$url .= "?data=".json_encode($data);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
$server_output = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);
if($server_output == "OK"){
return true;
}else{
return false;
}
}
?>