invoking swi-prolog from php

Question

I am trying to invoke swi-prolog from within a php script like :

exec("start plwin.exe -f C:\\path\\load.pl -g run_from_file.", $os1);
print_r($os1);

I can see that prolog window gets opened and complies the file, but immediately exits displaying an exit status as 1. I am sure that it is not executing the predicate I want to to execute.

Is there any other to invoke prolog with appropriate parameters and keep the window open without automatically exiting?

UPDATE : I configured the system env variables to the path where prolog is installed.

Answer 1

This link seems to have some helpful information about different ways that this can be done.

http://www.j-paine.org/dobbs/prolog_from_php.html