|
|
Posted by Jerry Stuckle on 12/31/07 13:34
Steve wrote:
> "Jerry Stuckle" <jstucklex@attglobal.net> wrote in message
> news:V9idndyZVKOozOXanZ2dnUVZ_qPinZ2d@comcast.com...
>> Steve wrote:
>>> "Jerry Stuckle" <jstucklex@attglobal.net> wrote in message
>>> news:mJidnRYAhdsKJO7anZ2dnUVZ_sbinZ2d@comcast.com...
>>>> Steve wrote:
>>>>> "Michael Fesser" <netizen@gmx.de> wrote in message
>>>>> news:0hlim3hgb5p7ifm2o13pjm6q4l0q5jhiim@4ax.com...
>>>>>> .oO(Logos)
>>>>>>
>>>>>>> On Dec 13, 3:16 pm, Michael Fesser <neti...@gmx.de> wrote:
>>>>>>>
>>>>>>>> At least when working with objects. But nevertheless
>>>>>>>>
>>>>>>>> $foo = new Test();
>>>>>>>> $a = $foo;
>>>>>>>> $b = &$foo;
>>>>>>>>
>>>>>>>> are still different things, even in PHP 5. In some particular
>>>>>>>> situations
>>>>>>>> this might become an issue.
>>>>>>> Oooo...errr...ummm...could someone explain how exactly those are
>>>>>>> different when using PHP5, then, please? If everything is done by
>>>>>>> reference for objects, then to me $a and $b both look like pointers
>>>>>>> to
>>>>>>> an object.
>>>>>> Don't confuse pointers with references, they are entirely different
>>>>>> things. PHP doesn't know pointers.
>>>>>>
>>>>>> And correctly spoken objects in PHP 5 are _not_ passed by reference
>>>>>> (at
>>>>>> least it's not what PHP calls a reference), even if it's still
>>>>>> mentioned
>>>>>> that way on many websites. But it's wrong.
>>>>>>
>>>>>> Internally objects are represented by a handle (a simple number),
>>>>>> which
>>>>>> is what is moved around when you assign objects to variables, copy
>>>>>> them
>>>>>> or pass them to a function. You're never working directly with the
>>>>>> object itself, but with its handle. Of course usually you won't notice
>>>>>> that, because it's handled transparently by PHP.
>>>>> michael, for people who come from a c/c++ background, what you've
>>>>> described is *exactly* a pointer. the only difference in php is that
>>>>> rather than the handle pointing to a memory address where information
>>>>> is stored, this php handle points to a symbol table entry where
>>>>> information is stored.
>>>>>
>>>> Wrong again, Stevie. A C++ pointer is not the same as a C++ reference.
>>>> And C doesn't have references, just as PHP doesn't have pointers.
>>>>
>>>>> in php, a reference (or byref) behaves *IDENTICALLY* to a c/c++
>>>>> pointer. there are somethings that you cannot do with this reference in
>>>>> php that you could in other languages, however, the nature of the beast
>>>>> is the same. i know that a reference in php is really just an alias of
>>>>> the symbol table entry, but really that just seems a matter of
>>>>> symantics to me. i don't care where things are stored at such a low
>>>>> level when i'm writing in a scripting language. i care about behaviors.
>>>>>
>>>> Wrong again. They behave much differently.
>>> read, jerry, read. show me how in *PHP* the behavior is different. you've
>>> tried before and failed. i'm not talking about the differences in
>>> c/c++/c# (as they *are* different there)...we're talking about php.
>> Stoopid. Show me where PHP has pointers. It doesn't.
>>
>> And you're the one who claimed that references and pointers behave
>> identically in C/C++. Wrong again.
>
> nope...i just said they were different in c, c++, and c#. i said for *PHP*
> the behavior is essentially the same. i never said php had pointers...but
> that the behavioral description is similar to pointers...and gave the
> caveats about the actual terms and definitions so that is was clear that
> there is technical difference.
>
> learn to read.
>
>
>
"i said for *PHP* the behavior is essentially the same."
"i never said php had pointers"
You're so dense you can't even see the contradiction on your own statements.
You're just a stoopid troll, Stevie, who uses people in a desperate
attempt to get some kind of acceptance. You don't use your real name
here because you're so afraid people will find out you're not really a
programmer.
But you're stoopidity has given you away once again. Any programmer
with more than two weeks of *real experience* in C++ programming knows
the difference between pointers and references - and knows how wrong you
are.
You're the worst kind of loser.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
Navigation:
[Reply to this message]
|