PhantomScript | Invisible JS code execution & social engineering | Runtime Evironment library

I try to parse a web page with phantomjs and I got into a problem that I can't figure out. The page gives an error if you try to load it too many times, and there's my problem.

I have a php file file.php with $result = shell_exec('~/tmp/phantomjs/phantomjs/bin/phantomjs ~/www/phantomscript.js 2>&1');

If I load that file.php in a browser, it works fine, it displays the page content.

But if I try it to run it from cron php path/to/file.php it displays the error that I tried too many times...

My question is, what could be the problem that, the same file.php works fine in a browser but it doesn-t work if it's loaded in console or cron.

My guess is that it's something to do with the way php works, if a script is loaded into a browser or ran from console. Maybe you can give me a hint or something.

Thanks.