The function of getting the LAN IP in PHP is not very easy to use. Can any expert help to optimize it?

The original code I wrote is as follows:

function the_lan_ip() {//

if (!is_windows_os()) { //If it is not a windows operating system, execute ifconfig to capture the corresponding IPv4 IP
exec('ifconfig' , $output);
for ($i = 0; $i <= count($output); $i++) {
error_reporting(0);
preg_match('/inet.*:(.*)
The above introduces the function of PHP to get the LAN IP. It is not very easy to use. Can any expert help optimize it, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.