ID: 44942 Comment by: listephp at andrioli dot com Reported By: inqualab1985 at gmail dot com Status: No Feedback Bug Type: Program Execution Operating System: Windows 2000 SP4 PHP Version: 5.2.5 New Comment:
I've the same problem too. I tried the latest snapshot 5.2.11RC2-dev build date: Aug 26 2009 23:42:35 , but it shows up. Configuration - Windows 2003 R2 - Apache 2.2.11 Both, exec() running java.exe and system() running .NET program, hang Apache as described above. Previous Comments: ------------------------------------------------------------------------ [2009-06-08 16:41:29] alex at bartl dot net Reproducable with PHP 5.2.9-1 on Windows2003 Server with Apache2.2 Workaround with calling session_write_close() before calling exec() confirmed working NOT reproducable with PHP 5.2.1 on Windows 2000 Server with IIS5 anyway, seems to be a duplicate of Bug#44994 ------------------------------------------------------------------------ [2009-04-07 15:12:50] gouldee at netscape dot com I am having the same or similar issue: OS: MS2003 PHP: 5.2.6 APACHE2: 2.2 The bug occurs with an PHP script that has a PHP passthru exec call that hangs every now and then. After the first hang occurs then any passthru call hangs in the same manner. I believe that the passthru call runs as I am calling a sendmail.exe process that does send the E-Mail, however, the Browser page hangs after the E-Mail has been sent by sendmail.exe called via passthru(). There are no PHP or Apache2 errors or warnings. It seems that the problem happens when (2) calls to the same .exe happens at the same time, but, I have no real proof of this, as I can't provide execution times for each instance of the sendmail.exe running. This is a serious problem, as all pages that call an .exe process after the initial hang will hang up as well. I can clear the bug by simply stopping and restarting the Apache service. I also note that If I run the page, that hangs up, manually in a Command Prompt DOS window like: D:\php page.php there are no hangs and the process performs correctly even during and after the first showing of the bug. So the problem seems to be when PHP does an exec call in conjunction with Apache, as I said even during the time a hang occurs I can still exec passthru commands from a command prompt. I can also run any page that calls PHP as long as the page does not have any exec or passthru calls in it, and all pages with HTML only runs fine as well during the hang period. ------------------------------------------------------------------------ [2009-02-26 15:14:32] frase at cs dot wisc dot edu This is happening to me as well, PHP 5.2.8, Apache 2.2.11, Windows 2000 Pro SP4. However, it only seems to happen when PHP is configured as an Apache module (php5apache2_2.dll); when I configure it as CGI, it works fine. I also have anecdotal evidence that it's related somehow to other sockets being open on the system. In my case, we have a VB (compiled) application with an embedded IE control, and also opens the serial port to communicate with some hardware. If that hardware is plugged in (and PHP is loaded as a module), then our scripts hang at 'exec("ping -n 1 somehost")'. If I unplug the hardware (so the serial port can't be opened), it works. ------------------------------------------------------------------------ [2009-02-17 10:12:38] russell_anam at hotmail dot com I can indeed confirm that this bug exists in the latest PHP version (PHP 5.2.8). exec() would randomly hang the Apache and the only solution was to restart the whole server (service restart did not help). I can also confirm that vlabella's solution INDEED worked for us. Since this workaround works I think it's safe to say this is indeed a PHP bug that needs to be fixed ASAP. ------------------------------------------------------------------------ [2009-01-29 18:21:30] rolinger1 at hotmail dot com I came across this article searching for a similar problem. I am using Perl 5.10 though but am having the same issue with Apache 2.2. That being said, I believe the issues are the same and that the problem is with Apache and not php or perl. With Perl I do a backtick call and Apache's CGI hangs. The windows system processes shows 1 cmd running and 1 perl app running for each time I click on the called web script. Perl call: @files = `dir ../configs /0:D /A:-D` ; Somehow, apache uses the backtick command to launch a "cmd" console process which in turn executes the system call "dir..." I say the Apache CGI hangs because other PHP scripts (that don't do system calls) all still seem to work. But after the first CGI hang, all other Perl calls hang - even scripts that don't have system calls in them. Scripts with system calls load another pair of cmd/perl processes and return no data, scripts without system calls loads another perl process but does return data. After the initial hang though, all related processes (cmd or perl) remain in memory and eventually Apache just hangs altogether. And when that happens we are forced to do a system reboot - simply doing a service restart has won't work. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/44942 -- Edit this bug report at http://bugs.php.net/?id=44942&edit=1