[FX.php List] After the Submit

[Leo R. Lundgren]

Sounds good!

25 sep 2008 kl. 16.38 skrev Jonathan Schwartz:

> Thanks for the education, Leo.
>
> I can now see why the edit to the script did not work. ;-)
>
> At the same time, I think I see an easy answer if the script is  
> designed to check a given value in FMP or text file to continue  
> looping.  It could be access via simple relationship to a one  
> record table or value in a text file. Probably wouldn't build this  
> into every script, but I have a couple of likely candidates.
>
> I'll give it a try.
>
> Thanks
>
> Jonathan
>
> At 3:30 PM +0200 9/25/08, Leo R. Lundgren wrote:
>> The server and client communicating via HTTP is quite a basic  
>> thing, so there isn't much support for these kind of things by  
>> default. When your browser sends it requests you have time to  
>> cancel that before the request to the server completes, but that's  
>> not your scenario. In order to cancel a long-running script on the  
>> server you would need some form of application server that  
>> maintains state and where you have code that can affect other  
>> threads/requests that are currently processing, assuming your  
>> application is more than just a simple PHP page which is quite  
>> procedural. So in short, I believe (correct me if I'm wrong :)  
>> that you need something quite different from a PHP page.
>>
>> I haven't tried if myself, but the thought of having your script  
>> records its state somewhere, in a file or a database, and then  
>> have the possibility to (from the browser) ask another script  
>> running as the same user on the server to send a termination  
>> signal (this would be in the operating system) to the running  
>> process, might work? This would probably require something else  
>> than an Apache server with mod_php, for example PHP running via  
>> FCGI and without restrictions in what it can do using system  
>> calls. Well, I don't know how feasable this is, and I doubt it's  
>> of interest in any case; It would just be a bad workaround for  
>> something that needs redesign.
>>
>> Regarding when you edited your script; You didn't notice any  
>> change in the running script since it had already been loaded and  
>> parsed by the PHP engine. Only subsequent requests would load the  
>> new/edited script.
>>
>> That's my take on it. I'm eager to hear if anyone know of a  
>> solution that I don't know of? :)
>>
>>
>> 25 sep 2008 kl. 15.19 skrev Jonathan Schwartz:
>>
>>> Hi Folks,
>>>
>>> Another one of those nagging questions...
>>>
>>> What server control is available from browser after hitting the  
>>> submit button, if any? Is there any way to Cancel an executing  
>>> script?
>>>
>>> Say we have a script that runs long by design such as an emailing  
>>> routine.  Or, a script that is supposed to run fast, but is hanging.
>>>
>>> The browser has an "X" button (Safari), but I'm confident that  
>>> that just tells the browser to stop the download of the current  
>>> page.  It doesn't tell the server to do the same, does it?
>>>
>>> On one misbehaving script, I had time to go in edit the looping  
>>> script (while it was executing) and added an exit in the loop. It  
>>> didn't seem to work.
>>>
>>> This is probably more applicable during development than production.
>>> Just asking.
>>>
>>> Jonathan
>>> --
>>> Jonathan Schwartz
>>> Exit 445 Group
>>> jonathan at exit445.com
>>> http://www.exit445.com
>>> 415-370-5011
>>> _______________________________________________
>>> FX.php_List mailing list
>>> FX.php_List at mail.iviking.org
>>> http://www.iviking.org/mailman/listinfo/fx.php_list
>>
>>
>> -|
>>
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>
>
> -- 
> Jonathan Schwartz
> Exit 445 Group
> jonathan at exit445.com
> http://www.exit445.com
> 415-370-5011
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