From: luke at cywh dot com
Operating system: Linux, Mac OS X
PHP version: 5.2.9
PHP Bug Type: *Compile Issues
Bug description: Random fatal error while using callback through
array_udiff_assoc
Description:
------------
When making a callback through array_udiff_assoc to a static function
this fatal error is produced, but randomly:
Fatal error: Non-static method (null)::(null)() cannot be called
statically in /opt/local/apache2/htdocs/site/cc.php on line 12
This error only occurs about 1/3 of the time or less, and usually
seems to happen right after saving a file. At first I thought it was
an eAccelerator issue as I could product this error almost every time
after re-saving the file (with or without changes), but I was also
able to reproduce this on my MacBook which I had installed the 5.2
branch on without any cache engines.
On a stock PHP installation with no extras it is mighty difficult to
reproduce this error. I was able to make it occur several times if I
refreshed the page 5-20 times after saving.
In the callback I'm referencing the function as a string:
"XC::greaterthan". I *think* using array('XC', 'greaterthan') corrects
the problem, but I am unsure as this error seems to occur completely
at random, and I have yet to have a 100% solid way of reproducing it.
The code below is the best way I was able to reproduce the occurrence.
Reproduce code:
---------------
class XC {
static public function greaterthan($value1, $value2) {
return $value1 > $value2;
}
}
class test {
function tester($num1, $num2) {
var_dump(array_intersect(
array_keys(
array_udiff_assoc(array('if' => $num1),
array('if' => $num2),
'XC::greaterthan')
), array('if')
));
}
}
$t = new test();
for($i=0; $i<10; $i++) {
$num1 = mt_rand(1, 100);
$num2 = mt_rand(1, 100);
$t->tester($num1, $num2);
}
Expected result:
----------------
No fatal error, just var dumps.
Actual result:
--------------
Fatal error: Non-static method (null)::(null)() cannot be called
statically in /opt/local/apache2/htdocs/site/cc.php on line 12
(Which points to the array_udiff_assoc function)
--
Edit bug report at http://bugs.php.net/?id=47638&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=47638&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=47638&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=47638&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=47638&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=47638&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=47638&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=47638&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=47638&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=47638&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=47638&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=47638&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=47638&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=47638&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=47638&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47638&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=47638&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=47638&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=47638&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=47638&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=47638&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=47638&r=mysqlcfg
