From: ap at tellusion dot com
Operating system: Linux Red Hat EL
PHP version: 5CVS-2006-12-25 (snap)
PHP Bug Type: Variables related
Bug description: References broken in php 5.2
Description:
------------
The first bug is that objects are being cloned when they are clearly
intended be references.
The second bug is that if one assigns the reference to another variable,
the first bug will disappear in some circumstances.
Reproduce code:
---------------
The output from each of these scripts is different between PHP 5.2 &
5.0.4.
reftest-int.php an example of an integer reference not being set as
expected, but after the reference is assigned to another variable, the
reference can be set using the same method.
reftest-array.php the same bugs, but using an array as the example. In
this scenario, two attempts to add data to an array (via a reference)
fails. Those two attempts are later repeated after data is successfully
added to the array in a more direct fashion and one of those two repeated
attempts now succeeds.
reftest-object.php a demonstration of the same bug with arrays and
within the context of an object.
ISOLATION
The faults are present in php5.2 & php5.2-200612250730 (STABLE).
The faults are not present in php 5.0.4, that is, the sample code appears
to run as expected on non-5.2 versions of PHP.
I also suspect the fault is not present in 5.1 but I have not run the
attached scripts against 5.1 (I have run an affected app though).
One exception, 5.0.4 partially fails the reftest-array.php script.
Specifically, it fails to insert xx2 & xx5 (is my interpretation of how
the language should work in this xx2/xx5 scenario correct?).
The PHP 5.0.4 machine is Linux 2.4.21-40.EL #1
The PHP 5.2 machine is Linux 2.6.9-22.0.2.ELsmp #1 SMP
Expected result:
----------------
>From PHP 5.0.4
### reftest-int.php ###
intTheValue = 10
intTheValue = 10
### reftest-array.php ###
arrTheArray = Array
(
[0] => xx1
[1] => xx3
[2] => xx4
)
### reftest-object.php ###
RefTest::addToArray(): arr = Array
(
[0] => xx1
)
RefTest::addToArray(): arr = Array
(
[0] => xx1
[1] => xx2
)
RefTest::addToArray(): arr = Array
(
[0] => xx1
[1] => xx2
[2] => xx3
)
objRefTest->getArray() = Array
(
[0] => xx1
[1] => xx2
[2] => xx3
)
Actual result:
--------------
>From PHP 5.2
### reftest-int.php ###
intTheValue = 0
intTheValue = 10
### reftest-array.php ###
arrTheArray = Array
(
[0] => xx3
[1] => xx4
)
### reftest-object.php ###
RefTest::addToArray(): arr = Array
(
[0] => xx1
)
RefTest::addToArray(): arr = Array
(
[0] => xx2
)
RefTest::addToArray(): arr = Array
(
[0] => xx3
)
objRefTest->getArray() = Array
(
)
--
Edit bug report at http://bugs.php.net/?id=39944&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=39944&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=39944&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=39944&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=39944&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=39944&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=39944&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=39944&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=39944&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=39944&r=support
Expected behavior: http://bugs.php.net/fix.php?id=39944&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=39944&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=39944&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=39944&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=39944&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=39944&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=39944&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=39944&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=39944&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=39944&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=39944&r=mysqlcfg
