Unexpected behavior for ::

13 years ago by Bogdan Bezuz — view source — reply

unread

Hello,
I'm not sure if this is the desired behavior and i don't want to submit
a bogus bug report.

class A
{
public function f1()
{
var_dump($this->_b);
}
}

class B
{
public $_b = 'stuff';

 public function f2()
 {
     A::f1();
 }

}

$b = new B();
$b->f2();

At first i would expect an error since A was not instantiated, at most i
would expect to return NULL but not 'stuff'.
Is this a bug ?

13 years ago by Sean Coates — view source — reply

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I'm not sure if this is the desired behavior and i don't want to submit a bogus bug report.

…

At first i would expect an error since A was not instantiated, at most i would expect to return NULL but not 'stuff'.
Is this a bug ?

This is explained here: http://php.net/language.oop5.basic#example-155 (the paragraph after this example, and in example #2)

13 years ago by Etienne Kneuss — view source — reply

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Hi,

Hello,
I'm not sure if this is the desired behavior and i don't want to submit a
bogus bug report.

class A
{
public function f1()
{
var_dump($this->_b);
}
}

class B
{
public $_b = 'stuff';

public function f2()
{
A::f1();
}
}

$b = new B();
$b->f2();

At first i would expect an error since A was not instantiated, at most i
would expect to return NULL but not 'stuff'.
Is this a bug ?

Not really, it's a BC compatibility that we had to drag since PHP4. If
you enable E_STRICT, it should output a warning saying something like
"importing $this from invalid context". It is/was scheduled for
cleanup in the next major version.

Best,

--

--
Etienne Kneuss
http://www.colder.ch

13 years ago by Bogdan Bezuz — view source — reply

unread

Hello,
Thanks for the info, as pointed out by Sean Coates this is sort of
documented, I've submited a documentation (problem/)bug report.
https://bugs.php.net/bug.php?id=60499

E_STRICT was disabled since a large part of the application was moved to
php 5 only last year and, even if i was aware that it is possible to
call non-static methods in a static way, i didn't expect this to work.

Hi,
Hello,
I'm not sure if this is the desired behavior and i don't want to submit a
bogus bug report.

class A
{
public function f1()
{
var_dump($this->_b);
}
}

class B
{
public $_b = 'stuff';
public function f2()
{
    A::f1();
}
}

$b = new B();
$b->f2();

At first i would expect an error since A was not instantiated, at most i
would expect to return NULL but not 'stuff'.
Is this a bug ?
Not really, it's a BC compatibility that we had to drag since PHP4. If
you enable E_STRICT, it should output a warning saying something like
"importing $this from invalid context". It is/was scheduled for
cleanup in the next major version.
Best,

--

--
Bezuz Bogdan
Programare Site
+40 721 269 934
bogdan.bezuz@emag.ro mailto:bogdan.bezuz@emag.ro

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