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Posted by Betikci Boris on 12/21/07 17:56
On Dec 21, 3:01 pm, wart...@hotmail.com wrote:
> Hello
>
> I have a php site. Some page needs to call an external program. The
> programs are home made c# applications.
>
> It uses to work without problem. For a while. Maybe it work for some
> hour. Or for a day. Or even for a week.
>
> At a certain point, when a php script calls the exe file, the
> application freezes. The following happens:
>
> <?
> $return_value = exec('path_to_exe_file');
> echo $return_value;
> ?>
>
> Well, the exec is executed (I can see that, the exe fil does what it
> has to do). But it doesnt return to the php-script. The php-script
> waits infinitely that the app will return, but it will not return. At
> a certain point the time execution exeedes.
>
> If I go to the command line and execute an exe file (the same one that
> exec calls), then it works without problem, and returns immediatly.
> But from the exec call it doesnt return.
>
> How do I solve this? Well, I restart the server. And hen everything
> works again. Which means that the script can use exec again without
> waiting infinitely.
>
> When the problems begin (when the exec begins to fail) the server can
> still work without problem. All the scripts run. The only scripts that
> dont run are those that have the exec call inside.
>
> error.log doesnt says anything about this.
>
> Im running apache 2.X on windows server 2003. PHP version is 5.x.
>
> I have put log function before and after every single call to exec. I
> analyzed it, but I can not understand why the exec fails. It only
> stops to get back the return value from the c# app. The c# app can
> also be a simple one with only a console.write (something like echo).
> But when exec has hanged up neither that will work.
>
> Someone can see the problem?
Bad combination! Apache server on Windows 2003 server. Thy combination
really diminishes the performance and may cause those freezes
You should switch to GNU/Linux-Apache/php or Windows2003/IIS/Asp.NET
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