配置php.ini以开启跨域名调用文件

php下跨域名调用文件，默认是不被允许的，比如会有如下的警告提示：

PHP Warning: require() [function.require]:  http:// wrapper is disabled in the server configuration by allow_url_include=0  in F:\nuodou\default.php on line 20

PHP Warning: require(http://www.discuz.com/source/class/class_core.php) [function.require]: failed to open stream: no  suitable wrapper could be found in  F:\nuodou.com\default.php on line 20

解决方法也简单，只需要配置一下php.ini文件，修改后：

allow_url_include = On

然后运行一下 iisreet，重启一下IIS即可！