ID: 16278
Updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Bogus
Bug Type: Reproducible crash
Operating System: Linux 2.2.16 (redhat 7.0)
PHP Version: 4.1.2
New Comment:
NO, I am saying that it does NOT work in PHP >= 4.1.0, including
4.2.0rc1.
What I meant by the 'output is the same' is that the stream sent to the
browser gets prematurely truncated (when PHP dies) at roughly the same
point in 4.1.2 and 4.2.0rc1. With 4.1.2, the seg-fault gets reported
to the error log. With 4.2.0rc1, the seg-fault does not get reported
to the error log, but it has definitely died prematurely.
This is a simple function that has worked for a long time, and works
great now if session_start isn't called. There is something peculiar
about HTTP_SESSION_VARS and _SESSION when sessions are active that is
causing the problem. The SERVER/POST/GET vars, in both HTTP_ and _var
forms are fine. As a matter of fact, if session_start is not called,
you can even create HTTP_SESSION_VARS and _SESSION arrays and they'll
work fine, too, so it isn't just the name.
session_start does something to HTTP_SESSION_VARS and _SESSION and
cause PHP to die under this code. Paste my sample code into a file and
see it for yourself. Look carefully, the truncation is right near the
end. To make it more obvious, add a "<P>DONE</P>" just before </BODY>
- you'll never see that text in the output.
Sincerely,
Bryan
Previous Comments:
------------------------------------------------------------------------
[2002-03-26 03:25:31] [EMAIL PROTECTED]
According to you, it wroks fine with 4.2.0rc1. So that doesn't really
matter.
------------------------------------------------------------------------
[2002-03-26 03:20:19] [EMAIL PROTECTED]
So you're saying that with PHP 4.2.0RC1 it works?
------------------------------------------------------------------------
[2002-03-26 00:02:49] [EMAIL PROTECTED]
Configuration:
./configure --with-apxs --enable-debug
php.ini = php.ini-recommended
Apache 1.3.12
I have been using a procedure to create nicely-formatted tables of
arrays and their contents for a long time. It works very well under
4.1.2 (and previous 4.* verions) for displaying $GLOBALS if
session_start has not been called. If session_start has been called,
it causes a seg-fault when the $HTTP_SESSION_VARS and/or $_SESSION is
processed.
My normal script is much more elaborate, but I've stripped it to the
bare minimum to make the bugs more obvious. There are four 'fix'
comments in the code - implementing any one will make the problem go
away, but none should be necessary.
I have compiled 4.2.0rc1 with the same ./configure options and used the
4.2.0rc1-supplied php.ini-recommended file as part of a further test.
The output is the same, but the seg-fault is not reported to the error
log with 4.2.0rc1.
------------ index.php -------------------
<?PHP
# fix 1 is to pass the array by value
function CVTT (&$array, $depth=0) {
if($depth==0) {
print "<PRE>\n";
}
while(list($key,$value)=each($array)) {
# fix 2 is to skip both instances of the session variables array
### If this session-skipping block is enabled, there are no problems
# if($key=="_SESSION" || $key=="HTTP_SESSION_VARS") {
# print "skipping $key\n";
# continue;
# }
### End of session-skipping block
for($c=0;$c<$depth*5;$c++) {
print " ";
}
print "$key=";
if(is_array($value)) {
$valuestring="Array";
} elseif(is_object($value)) {
$valuestring="Object";
} elseif(is_bool($value)) {
if($value) {
$valuestring="Boolean True";
} else {
$valuestring="Boolean False";
}
} else {
$valuestring=$value;
}
print "$valuestring\n";
if(is_array($array[$key])) {
# fix 3 is to pass $value instead of $array[$key]
CVTT($array[$key], $depth+1);
}
}
if($depth==0) {
print "</PRE>\n";
}
}
# fix 4 is to eliminate the session_start
session_start();
$_SESSION['one']="two";
?>
<HTML>
<HEAD>
</HEAD>
<BODY>
<?PHP
CVTT($GLOBALS)
?>
</BODY>
</HTML>
---------------end of index.php -------------
I was not able to get a backtrace by following the instructions in the
php documentation. I'd be happy to try again with more-detailed
instructions.
If there is any further testing you would like, please let me know.
Sincerely,
Bryan
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=16278&edit=1
