integrating perl and PHP problem

Hi Everyone, I have a perl program which I would like to display its results in PHP. I have read PHP book and the solution is to convert the perl program which is not easy. I have tried a simple example but it is not working. The perl script is #! /usr/bin/perl -w print "hello world" and the Php script is <?php $result = exec("/var/www/hello.pl",$dirout); foreach($dirout as $line) { echo "$line\n"; } ?> Thanks.