# nsapi_virtual

(PHP 4 >= 4.3.3, PHP 5, PHP 7)

nsapi_virtual — Perform an NSAPI sub-request

### 说明

nsapi_virtual ( string `$uri` ) : bool

nsapi_virtual() is an NSAPI-specific function which is equivalent to <!--#include virtual...--> in SSI (.shtml files). It does an NSAPI sub-request. It is useful for including CGI scripts or .shtml files, or anything else that you'd parse through webserver.

To run the sub-request, all buffers are terminated and flushed to the browser, pending headers are sent too.

You cannot make recursive requests with this function to other PHP scripts. If you want to include PHP scripts, use include or require.

> Note:

> This function depends on a undocumented feature of the Netscape/iPlanet/Sun webservers. Use phpinfo() to determine if it is available. In the Unix environment it should always work, in Windows it depends on the name of a ns-httpdXX.dll file.

> Read the note about subrequests in the NSAPI section (UNIX, Windows) if you experience this problem.

### 参数

`uri`

  The URI of the script.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。