From: rachmel at avaya dot com
Operating system: Linux 2.6.14.7
PHP version: 5.2.6
PHP Bug Type: Other web server
Bug description: exec returns the wrong status
Description:
------------
PHP's exec function returns the wrong return value.
When running script from CLI, works perfectly. When running the same
script from the web-server context - 90% of the times it returns the wrong
value - (-1).
I am using the appWeb embedded server, which is a slim apache-like
webserver.
I validated there are no permission running issues, and I couldn't see any
log messages sent by PHP that might indicate what the problem is.
Reproduce code:
---------------
<?php
print "<pre>";
for ($i = 0; $i < 10; ++$i) {
exec("/bin/true", $output, $status);
print "exec('/bin/true') returns with <b>$status</b> (expected
0)\n";
}
for ($i = 0; $i < 10; ++$i) {
exec("/bin/false", $output, $status);
print "exec('/bin/false') returns with <b>$status</b> (expected
1)\n";
}
print "</pre>";
?>
Expected result:
----------------
All executions of "true" should print "0" to the screen
All executions of "false" should print "1" to the screen.
Actual result:
--------------
Most of the times, all executions result in an error code of "-1" being
printed to the screen.
--
Edit bug report at http://bugs.php.net/?id=46477&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=46477&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=46477&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=46477&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=46477&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=46477&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=46477&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=46477&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=46477&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=46477&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=46477&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=46477&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=46477&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=46477&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=46477&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46477&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=46477&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=46477&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=46477&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=46477&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=46477&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=46477&r=mysqlcfg
