#21972 [Fbk->Opn]: shell functions (system etc) cause crash
ID: 21972
User updated by: befletch at yahoo dot com
Reported By: befletch at yahoo dot com
-Status: Feedback
+Status: Open
Bug Type: Reproducible crash
Operating System: Windows 98/ME
PHP Version: 4.3.0
New Comment:
I had the exact same behaviour on both of my systems
(Win ME, Win 98) as I had before. I forgot to update
my bug report earlier, but I had noticed an odd thing
about the problem; it only happened once per system
boot. After running a script and causing a crash, I
could kill a non-responding 'winoldap' process and
then the system would work fine. I could run a script
which shelled out another command a few thousand
times, and not have any trouble. Until the next
reboot, of course.
Anyway, all of that was true of the previously tested
build and the 4.3.2 RC build that you suggested I try.
I then tried to eliminate a potential conflict by
uninstalling Norton AntiVirus (Corporate edition,
v 7.50) on the Win 98 box, rebooting, and running the
test. The problem no longer occurred, with either
the 4.3.0 version or with the 4.3.2 RC build. I didn't
try this on the Win ME box but I expect the problem
would also go away on it, as both machines have had
the exact same symptoms so far.
I don't know what to do with the bug, but that is my
observations to date.
Previous Comments:
------------------------------------------------------------------------
[2003-04-28 12:18:25] wez@php.net
Please try using this CVS snapshot:
http://snaps.php.net/php4-STABLE-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php4-win32-STABLE-latest.zip
Do you still have this problem with the latest snapshot?
------------------------------------------------------------------------
[2003-01-30 18:34:10] nicos@php.net
I can't verify it under WinXP and WinME with 4.3.0 and latest CVS.
------------------------------------------------------------------------
[2003-01-30 18:30:30] wez@php.net
Sounds like a valid report to me.
PHP calls your system popen() function which internally uses the
shell.
Regardless of having to specify the shell, PHP should not crash.
Lets have someone with win9x look into this in more detail before
making any further decisions.
------------------------------------------------------------------------
[2003-01-30 18:27:25] nicos@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
You need to call command.com to exec() something under Windows.
------------------------------------------------------------------------
[2003-01-30 17:10:19] befletch at yahoo dot com
I get repeatable crashes on both Windows 98 and Windows ME running any
script which calls a shell function, like system(), exec(), or
shell_exec(). This applies to both 4.2.3 and 4.3.0, using either the
CGI or CLI executable. No web server is used on these machines, just
DOS command line or drag and drop script execution. I have tested this
on two different machines (one 98 and one ME).
An example script follows:
<?php
// Any of these commands will cause a crash.
// Comment out all but one:
php hello.php; // a hello world script
system("C:\\PHP\\php -r 'exit(1);'");
system('edit hello.php');
exec('C:\WINDOWS\NOTEPAD.EXE');
?>
A dialog comes up stating roughly, "This program has performed an
illegal operation and will be terminated. Close all programs and
reboot the computer." The dialog's details button describes the
problem as, "The program has encountered an invalid page exception,"
notes a fault location of 0028:0009, and says no interrupts were in
service.
My install process is to simply unpack the tar-ball and place it in
C:\php. I don't modify php.ini, and I don't install any extensions.
Purely unpack-and-go. I can execute fairly complex scripts with PHP
installed like this, but anything involving a shell crashes, requiring
a reboot.
------------------------------------------------------------------------
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Thread (9 messages)