virtual() is an Apache-specific function which
is equivalent 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.
Warning
This function works only when PHP is compiled as an Apache module,
since it uses the Apache API for doing sub requests. Query string can be
passed to the included file but $_GET is copied from
the parent script and only $_SERVER['QUERY_STRING'] is
filled with the passed query string. The query string may only be passed
when using Apache 2. The requested file will not be listed in the Apache access log.
As of PHP 4.0.6, you can use virtual() on PHP files.
However, it is typically better to use include() or
require() if you need to include another PHP file.
Note: As of PHP 4.3.3 you can use this function with the
NSAPI server module in Netscape/iPlanet/SunONE
webservers, too.
Php virtual Function syntax tag
virtual php code on this is provided for your study purpose, it will guide you to know how create and design a website using php. use it to practice and train your self online
Php virtual syntax tutorial
php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.