function getServerAddr() {       //运行 web app       if (isset($_SERVER["SERVER_ADDR"])) {           return $_SERVER["SERVER_ADDR"];       } else { // Running CLI           if (stristr(PHP_OS, 'WIN')) {               //  针对windows服务器所执行的一种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/', $new_line)) { //中文系统                       list($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;