Please help: Error - Circular Redirection

[Jerry]

Hi All

I would very much appreciate your help:
I have two scripts alternating in the background triggering themselves
mutually. Here is how:

1.)
Script A does something and then calls Script B through the header()
function. Using something like
header("Locatio n:http//mydomain.com/scriptb.php");

2.)
Script B then does something as well and afterwards calls Script A
again also using the header() function.

After exactly 10 rounds my browser suddenly shows an PHP error message
which mentions a "circular redirection" error aborting the script.

QUESTION:
Is there a way to avoid that error?

PURPOSE:
The two-script-concept was supposed to be a solution to prevent
time-outs during time consuming processes by simply handing the
process over to another script before the time limit is reached thus
initiating a new script session by the other script which would
continue the process. In other words: The process is being kicked back
and forth between the two scripts until it's finished.

Any ideas ???? Thank you guys.
Jerry

[Christian Fersch]

Re: Please help: Error - Circular Redirection

Jerry wrote:[color=blue]
> After exactly 10 rounds my browser suddenly shows an PHP error message
> which mentions a "circular redirection" error aborting the script.[/color]
This is a protection so a script can't end in an endless redirection-loop.
[color=blue]
> Is there a way to avoid that error?[/color]
You could try meta-refreshs, but there could also be a configuration
directive, settings this.

[Ray Morgan]

Re: Please help: Error - Circular Redirection

Jerry <none@none.co m> wrote:
[color=blue]
>Hi All
>
>I would very much appreciate your help:
>I have two scripts alternating in the background triggering themselves
>mutually. Here is how:
>
>1.)
>Script A does something and then calls Script B through the header()
>function. Using something like
>header("Locati on:http//mydomain.com/scriptb.php");
>
>2.)
>Script B then does something as well and afterwards calls Script A
>again also using the header() function.
>
>After exactly 10 rounds my browser suddenly shows an PHP error message
>which mentions a "circular redirection" error aborting the script.
>
>QUESTION:
>Is there a way to avoid that error?
>
>PURPOSE:
>The two-script-concept was supposed to be a solution to prevent
>time-outs during time consuming processes by simply handing the
>process over to another script before the time limit is reached thus
>initiating a new script session by the other script which would
>continue the process. In other words: The process is being kicked back
>and forth between the two scripts until it's finished.
>
>Any ideas ???? Thank you guys.
>Jerry[/color]

Ouch! Why not just change the timeout setting in php.ini?


--
Ray Morgan

http://Fares-Fair.com/

[Dana Cartwright]

Re: Please help: Error - Circular Redirection

When I do a long-running process on a shared server, I find that if I issue
a short 'sleep' call ever few seconds, I can run a process for a long time
(hours and even days), even though I'm running on a server in which there is
a 30-second timeout for runaway processes.

The 'sleep' is a way to yield the processor, giving other processes a chance
to run.

So you might simplify your processing in this way, using a single PHP
script, rather than flipping back and forth between two pages. It should be
easier for you to write, and might even impose less load on your server.

--
--------------------
My e-mail address doesn't have a 2 in it.
"Christian Fersch" <Chronial@web.d e> wrote in message
news:c9q9p9$aa5 $05$1@news.t-online.com...[color=blue]
> Jerry wrote:[color=green]
> > After exactly 10 rounds my browser suddenly shows an PHP error message
> > which mentions a "circular redirection" error aborting the script.[/color]
> This is a protection so a script can't end in an endless redirection-loop.
>[color=green]
> > Is there a way to avoid that error?[/color]
> You could try meta-refreshs, but there could also be a configuration
> directive, settings this.[/color]

[Rook]

Re: Please help: Error - Circular Redirection

if you just want the script to run without dying, but you don't care about
seeing the end-result in the browser you can...
<?
function this_function()
{
// do a bunch of wacky stuff here...
}
?>

or.. if you want to see something in the browser.. you can do something like
this. (This is from actual working code I wrote a long time ago... i
trimmed out the stuff specific to my application but you should get the
idea...)
<?
set_time_limit( 0);
session_start() ;

// the setup...
if (!isset($_SESSI ON['count'])) {

$_SESSION['count'] = 0;

$_SESSION['chunks'] = array_chunk(fil e('/some/file.txt), 50);

$_SESSION['start_time'] = date("Y-m-d H:i:s");
$_SESSION['chunk_count'] = count($_SESSION['chunks']);

header('Locatio n: ' . $_SERVER['PHP_SELF']);
exit();

// the run through
} else {

++$_SESSION['count'];

echo 'Start Time: ' . $_SESSION['start_time'] . '<br />';
echo 'Pass: ' . $_SESSION['count'] . ' of ' .
$_SESSION['chunk_count'] . '<br />';

if (isset($_SESSIO N['chunks'][0])) {

foreach ($_SESSION['chunks'][0] as $k => $v) {

$line = trim($v);

//
// your code to do something with the line goes here.
//

} // END foreach loop

array_shift($_S ESSION['chunks']);
echo '<META HTTP-EQUIV="REFRESH" CONTENT="0; url=' .
$_SERVER['PHP_SELF'] . '">';

} else {

// must be done! Display the results.
$_SESSION['end_time'] = date("Y-m-d H:i:s");

echo '<pre>';
print_r($_SESSI ON);
echo '</pre>';

}

}

?>


"Jerry" <none@none.co m> wrote in message
news:un61c05ijr 09in81vcrohqasc h2p4o4d49@4ax.c om...[color=blue]
> Hi All
>
> I would very much appreciate your help:
> I have two scripts alternating in the background triggering themselves
> mutually. Here is how:
>
> 1.)
> Script A does something and then calls Script B through the header()
> function. Using something like
> header("Locatio n:http//mydomain.com/scriptb.php");
>
> 2.)
> Script B then does something as well and afterwards calls Script A
> again also using the header() function.
>
> After exactly 10 rounds my browser suddenly shows an PHP error message
> which mentions a "circular redirection" error aborting the script.
>
> QUESTION:
> Is there a way to avoid that error?
>
> PURPOSE:
> The two-script-concept was supposed to be a solution to prevent
> time-outs during time consuming processes by simply handing the
> process over to another script before the time limit is reached thus
> initiating a new script session by the other script which would
> continue the process. In other words: The process is being kicked back
> and forth between the two scripts until it's finished.
>
> Any ideas ???? Thank you guys.
> Jerry[/color]

[Jerry]

Re: Please help: Error - Circular Redirection

Hello People!

Thank you so far. I will try your suggestions.
Nevertheless, I'm afraid the problem persists because I would need a
solution which allows me to close the browser once the process has
been triggered. Any ideas on this?
Your help is greatly appreciated.
Jerry

On Fri, 04 Jun 2004 18:11:10 +0200, Jerry <none@none.co m> wrote:
[color=blue]
>Hi All
>
>I would very much appreciate your help:
>I have two scripts alternating in the background triggering themselves
>mutually. Here is how:
>
>1.)
>Script A does something and then calls Script B through the header()
>function. Using something like
>header("Locati on:http//mydomain.com/scriptb.php");
>
>2.)
>Script B then does something as well and afterwards calls Script A
>again also using the header() function.
>
>After exactly 10 rounds my browser suddenly shows an PHP error message
>which mentions a "circular redirection" error aborting the script.
>
>QUESTION:
>Is there a way to avoid that error?
>
>PURPOSE:
>The two-script-concept was supposed to be a solution to prevent
>time-outs during time consuming processes by simply handing the
>process over to another script before the time limit is reached thus
>initiating a new script session by the other script which would
>continue the process. In other words: The process is being kicked back
>and forth between the two scripts until it's finished.
>
>Any ideas ???? Thank you guys.
>Jerry[/color]