Bug #51886 [Opn]: call_user_func() does not propagate the scope
Edit report at http://bugs.php.net/bug.php?id=51886&edit=1
ID: 51886
User updated by: vesko at webstudiobulgaria dot com
Reported by: vesko at webstudiobulgaria dot com
Summary: call_user_func() does not propagate the scope
Status: Open
Type: Bug
Package: Scripting Engine problem
Operating System: Debian 5.0
PHP Version: 5.3SVN-2010-05-22 (snap)
New Comment:
well, yes or no it has to be consistent. My personal opinion is also
that $this should not be defined, but as I quoted it above according PHP
5.3 policy it should say yes.
Previous Comments:
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[2010-05-25 09:06:41] mike@php.net
doh! From my understanding, this should say "no" *all* 4 times. There's
no t2 instance.
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[2010-05-22 16:10:50] vesko at webstudiobulgaria dot com
Description:
------------
call_user_func() does not propagate the scope when used in calls between
two classes that have no child-parent relation. When they have
child-parent relation as described in this bug entry:
http://bugs.php.net/bug.php?id=47402 it is fine.
As it is put in the "Backward Incompatible Changes" here:
http://www.php.net/manual/en/migration53.incompatible.php
"The call_user_func() family of functions now propagate $this even if
the callee is a parent class. ". I guess it has to do it for classes
that have no relation as well (or if not so the direct call
t2::some_method() should not do it either). As it is at the moment is
inconsistent.
P.S. As well I think a better explanation with an example in the docs
should be added for "The call_user_func() family of functions now
propagate $this even if the callee is a parent class.". It is not clear
at all what it is about if one don't get onto the original bug entry:
"http://bugs.php.net/bug.php?id=47402".
I didnt use the original 47402 entry as in fact it is not a bug.
Test script:
---------------
class t1
{
public function __call($method,$args) {
//call_user_func('t2::some_method',$args);//for PHP 5.3
call_user_func(array('t2','some_method'),$args);
t2::some_method();
}
public function existing_method() {
//call_user_func('t2::some_method');//for PHP 5.3
call_user_func(array('t2','some_method'));
t2::some_method();
}
}
class t2
{
public function some_method() {
print isset($this)?'yes':'no';
print PHP_EOL;
}
}
$t1 = new t1;
$t1->existing_method();
$t1->non_existing_method();//use overloading
Expected result:
----------------
yes
yes
yes
yes
Actual result:
--------------
no
yes
no
yes
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Edit this bug report at http://bugs.php.net/bug.php?id=51886&edit=1
Thread (5 messages)