can i call method in a class similar to $this->myFunction

[christopher vogt]

Hi,

i'm wondering if there is something like $this-> to call a method inside
another method of the same class without using the classname in front.

I actually use

class TEST
{
function func1()
{
}
function func2()
{
TEST::func1();
}
}

is there something i can use instead of TEST so that i don't need to change
every line when i rename the class?

Thx in advance,

Chris

[powerboy]

Re: can i call method in a class similar to $this->myFuncti on

"christophe r vogt" <christopher.vo gt@rwth-aachen.de> wrote in message
news:bivv28$fg4 $1@nets3.rz.RWT H-Aachen.DE...[color=blue]
> Hi,
>
> i'm wondering if there is something like $this-> to call a method[/color]
inside[color=blue]
> another method of the same class without using the classname in[/color]
front.[color=blue]
>
> I actually use
>
> class TEST
> {
> function func1()
> {
> }
> function func2()
> {
> TEST::func1();
> }
> }
>
> is there something i can use instead of TEST so that i don't need to[/color]
change[color=blue]
> every line when i rename the class?[/color]


$this->func1() inside of func2 will work.

[christopher vogt]

Re: can i call method in a class similar to $this-&gt;myFuncti on

> $this->func1() inside of func2 will work.

unfortunately it does only work if i create an object of class TEST. But i
want to access the methods without creating an object:

<?php
TEST::func2();

class TEST
{
function func1()
{
}
function func2()
{
$this->func1();
}
}
?>

This code leads to:
Fatal error: Call to a member function on a non-object in
C:\wampp2\htdoc s\Sites\ITS\TMP 3jxyokjte1.php on line 11

So what can i do instead of using TEST::func1(); because i don't want to use
the name of the class more than (after the word "class") once in the
declaration of the class.

Thx,
chris

[christopher vogt]

Re: can i call method in a class similar to $this-&gt;myFuncti on

Someone told me the answer...

i was searching for self:: which is noch implemented in PHP yet but will be
sometime.

Chris

[CC Zona]

Re: can i call method in a class similar to $this-&gt;myFuncti on

In article <bj04b3$l45$1@n ets3.rz.RWTH-Aachen.DE>,
"christophe r vogt" <christopher.vo gt@rwth-aachen.de> wrote:
[color=blue][color=green]
> > $this->func1() inside of func2 will work.[/color]
>
> unfortunately it does only work if i create an object of class TEST. But i
> want to access the methods without creating an object:
>
> <?php
> TEST::func2();
>
> class TEST
> {
> function func1()
> {
> }
> function func2()
> {
> $this->func1();
> }
> }
> ?>
>
> This code leads to:
> Fatal error: Call to a member function on a non-object in
> C:\wampp2\htdoc s\Sites\ITS\TMP 3jxyokjte1.php on line 11[/color]

The reason that example fails is because $this is not a valid reference
inside a method called with the :: operator. From <http://php.net/manual/keyword.paamayi m-nekudotayim.php >:

"There are class functions, but there are no class variables. In fact,
there is no object at all at the time of the call. Thus, *a class function
may not use any object variables (but it can use local and global
variables), and it may no use $this at all*." (Emphasis added)

Thus a call to TEST::func1() works, but TEST::func2() throws a fatal error.
[color=blue]
> So what can i do instead of using TEST::func1(); because i don't want to use
> the name of the class more than (after the word "class") once in the
> declaration of the class.[/color]

AFAIK, there is no such option. If you want to call a class method without
creating an object, you must call the class by name.

It sounds as though wrapping this function in a class might not be useful
for you in this circumstance. Have you considered a different design
approach? Maybe what you'd be better off declaring func2() as a non-class
function.

--
CC

[christopher vogt]

Re: can i call method in a class similar to $this-&gt;myFuncti on

> > This code leads to:[color=blue][color=green]
> > Fatal error: Call to a member function on a non-object in
> > C:\wampp2\htdoc s\Sites\ITS\TMP 3jxyokjte1.php on line 11[/color][/color]
SURE ;), my fault, postet the wrong code in my second posting, the first one
has the right code....
[color=blue]
> "There are class functions, but there are no class variables. In fact,
> there is no object at all at the time of the call. Thus, *a class function
> may not use any object variables (but it can use local and global
> variables), and it may no use $this at all*." (Emphasis added)[/color]

got this and that were where my question took place. I was searching for the
missing self:: abstraction (someone told me) but it will be added in PHP 5.
[color=blue]
> Thus a call to TEST::func1() works, but TEST::func2() throws a fatal[/color]
error.
sure, because of $this->...
[color=blue][color=green]
> > So what can i do instead of using TEST::func1(); because i don't want to[/color][/color]
use[color=blue][color=green]
> > the name of the class more than (after the word "class") once in the
> > declaration of the class.[/color]
> AFAIK, there is no such option. If you want to call a class method[/color]
without[color=blue]
> creating an object, you must call the class by name.[/color]
Yes but it seems a bit strange that you HAVE to use the classname INSIDE the
class, but that will be fixed, as i said before
[color=blue]
> It sounds as though wrapping this function in a class might not be useful
> for you in this circumstance. Have you considered a different design
> approach? Maybe what you'd be better off declaring func2() as a non-class
> function.[/color]
Thats not possible (in a fine way) for my case because the class offer a
simple database-abstraction and -interface.

But thanks for your Posting :).

Chris