PHP编程：PHP跨平台获取服务器IP地址自定义函数分享

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/', $new_line)) { //中文体系  
                    list($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;