From: a at b dot c dot de
Operating system: Windows XP SP2
PHP version: 5.2.0
PHP Bug Type: Feature/Change Request
Bug description: Repeated dereferencing in object callbacks
Description:
------------
Object callbacks $foo->bar() are represented as arrays array($foo, 'bar').
Since PHP now supports the syntax $foo->bar->baz(), it seems at first sight
that callback arrays could be nested similarly.
Currently to use the baz() method above in a callback, one must use a
temporary variable $temp=$foo->bar, and use array($temp, 'baz') as the
callback in the same way that in PHP4 it was necessary to write
$temp=$foo->bar; $temp->baz().
It would seem syntactically unambiguous to write the callback as
array(array($foo, 'bar'), 'baz'). There is the matter that its first
element refers to an object, not a method, but that's what the first
element of an array callback is supposed to refer to (static class methods
notwithstanding).
Reproduce code:
---------------
<?php
class aclass
{
public $b;
}
class bclass
{
public function foo($v)
{
return $v*2;
}
}
$t = array('1','2','3','4','5','6','7','8','9');
$a = new aclass;
$a->b = new bclass;
print_r(array_map(array(array($a, 'b') ,'foo'), $t));
Expected result:
----------------
Array
(
[0] => 2
[1] => 4
[2] => 6
[3] => 8
[4] => 10
[5] => 12
[6] => 14
[7] => 16
[8] => 18
)
Actual result:
--------------
Warning: array_map(): The first argument, 'Array', should be either NULL
or a valid callback in ...
--
Edit bug report at http://bugs.php.net/?id=40061&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=40061&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=40061&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=40061&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=40061&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=40061&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=40061&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=40061&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=40061&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=40061&r=support
Expected behavior: http://bugs.php.net/fix.php?id=40061&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=40061&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=40061&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=40061&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40061&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=40061&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=40061&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=40061&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=40061&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=40061&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=40061&r=mysqlcfg
