Re: Executing a python script from within perl

["Daniel Brown" <parasane@xxxxxxxxx>]

    Forwarded to the appropriate list (PHP General).  Anuj: If you're
not already subscribed, please visit http://php.net/mailinglists and
subscribe to the PHP General list, or send a blank email to
php-general-subscribe@xxxxxxxxxxxxxx

On Tue, Jul 22, 2008 at 11:09 PM, Anuj Bhatt <anuj.bhatt@xxxxxxxxx> wrote:
> Hi,
>
>
> I'm new to PHP and just installed apache2 with php support. I'm trying
> to execute a Python script (from within php), which does take a good
> amount of time and am waiting for it to terminate so that I can process
> the output and print that out in HTML.
>
> The problem I'm having is that I can't get the PHP script to wait for
> the Python file to terminate. If I try it with a simple Python script
> say "print Hello, World!" it gets that. But anything that takes
> substantially long time, it just returns. I've tried system("myfile.py",
> $result) and $result results in a 1 and prints any subsequent prints in
> the PHP file. I also tried exec, with no luck. I've read through
> http://www.php.net/function.exec and the documentation presented in the
> "See Also" section with other commands. I haven't got anywhere yet,
> after much work. Any pointers, suggestions and fixes?

    Try this to see if your script is outputting any errors:

<?php
    exec('/path/to/python your-script.py 2>&1',$ret);
    print_r($ret);
?>

    If that works, you may just need to adjust your timeout and set
ignore_user_abort(1) to allow the Python script to keep running.  If
all else fails, and you're aware of the side-effects, go fork()
yourself.  ;-P

-- 
</Daniel P. Brown>
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