## Example

`

     bool virtual ( string $filename )

`

## Description

virtual() is an Apache-specific function which is similar to <`!--#include virtual...--`> in mod_include. It performs an Apache sub-request. It is useful for including CGI scripts or .shtml files, or anything else that you would parse through Apache. Note that for a CGI script, the script must generate valid CGI headers. At the minimum that means it must generate a Content-Type header. To run the sub-request, all buffers are terminated and flushed to the browser, pending headers are sent too. This function is only supported when PHP is installed as an Apache module.

## Return Values

Performs the virtual command on success, or returns FALSE on failure.