function getServerAddr() {   
    //運行 web app   
    if (isset($_SERVER["SERVER_ADDR"])) {   
        return $_SERVER["SERVER_ADDR"];   
    } else { // Running CLI   
        if (stristr(PHP_OS, 'WIN')) {   
            //  針對windows服務器所執行的一種hacky方式    
            exec("ipconfig /all", $catch);   
            foreach ($catch as $line) {   
                $new_catch[] = iconv("gbk", "utf-8", $line) . "/n";   
            }   
            foreach ($new_catch as $new_line) {   
                if (preg_match(‘/IPv4 地址/', $new_line)) { //中文系統   
                    list($t, $ip) = explode(‘:', $new_line);   
                    $ip = trim($ip);   
                    preg_match(‘/((?:(?:25[0-5]|2[0-4]/d|((1/d{2})|([1-9]?/d)))/.){3}(?:25[0-5]|2[0-4]/d|((1/d{2})|([1-9]?/d))))/', $ip , $match);   
                    return $match[1];   
                }   
            }   
        } else {   
            $ifconfig = shell_exec(‘/sbin/ifconfig eth0′);   
            preg_match(‘/addr:([/d/.]+)/', $ifconfig, $match);   
            return $match[1];   
        }   
    }   
}   
  
$ip = getServerAddr();   
print $ip;