Re: [PHP] Inherit Methods
Norbert Wenzel wrote:
Is it possible to run inherited methods in the scope of the child class?
In my case I have an abstract class called 'Company' and some child
classes. There is a non abstract function in 'Company' which prints
'$this-phoneList'. That function should be the same to all child
classes, without rewritting it in every class.
I call the printing method via the child class like
$childObject-printPhoneList();
The call seems to be handed over to the parent class 'Company' which is
fine. But the $this points to the phoneList of the abstract parent
class. So the phoneList in the abstract class seems to be unset, since i
have set the phone list in the child class.
Here's a short example, showing what I mean:
?php
abstract class AbstractClass {
^ seeing as you are using the abstract keyword you must be using php5.
which supports the 'parent' keyword but that is not what you want right
now...
private $var;
get rid of the 'private' here and replace it with 'protected'
public function printVar() {
echo('var: ' . $this-var . 'br');
}
}
class ConcreteClass extends AbstractClass {
public function __construct($var) {
$this-var = $var;
}
public function printVarChild() {
echo('var (child): ' . $this-var . 'br');
}
}
$cl = new ConcreteClass(15);
$cl-printVar();
$cl-printVarChild();
?
Output is:
var:
var (child): 15
Has anyone an idea how to print the $var of the child, without copying
the method in every child class?
thanks in advance,
Norbert
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Inherit Methods
Jochem Maas wrote: Norbert Wenzel wrote: private $var; get rid of the 'private' here and replace it with 'protected' too stupid. I'm sorry for my question. thank you for opening my eyes. norbert -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Inherit Methods
Norbert Wenzel wrote: Jochem Maas wrote: Norbert Wenzel wrote: private $var; get rid of the 'private' here and replace it with 'protected' too stupid. I'm sorry for my question. the only stupid people are those that don't make an effort - you don't seem to fall into that category. (I don't subscribe to the 'there are no stupid questions philosphy ;-) for instance 'Hey, Norbert - what is your name?', that woudl be a pretty stupid question :-P) thank you for opening my eyes. vanilla sky :-) norbert -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Inherit Methods
Hi !
you have to defined protected $var.
This is a example where php5 OO model has a little ambiguities.
Thing a few in your problem !, on de child class scope $var it's
private then when yo execute printVar(), you aren't executed on parent
scope you are calling a copie on child scope, then you don't have
access to $var. Only when you use parent scope throw
parent::printVar() , you realy calling the parent class instance into
your child then print result.
Then when you want to have a variable for being used on a public
inherit method you have to defined protected
On 8/8/05, Norbert Wenzel [EMAIL PROTECTED] wrote:
Is it possible to run inherited methods in the scope of the child class?
In my case I have an abstract class called 'Company' and some child
classes. There is a non abstract function in 'Company' which prints
'$this-phoneList'. That function should be the same to all child
classes, without rewritting it in every class.
I call the printing method via the child class like
$childObject-printPhoneList();
The call seems to be handed over to the parent class 'Company' which is
fine. But the $this points to the phoneList of the abstract parent
class. So the phoneList in the abstract class seems to be unset, since i
have set the phone list in the child class.
Here's a short example, showing what I mean:
?php
abstract class AbstractClass {
private $var;
public function printVar() {
echo('var: ' . $this-var . 'br');
}
}
class ConcreteClass extends AbstractClass {
public function __construct($var) {
$this-var = $var;
}
public function printVarChild() {
echo('var (child): ' . $this-var . 'br');
}
}
$cl = new ConcreteClass(15);
$cl-printVar();
$cl-printVarChild();
?
Output is:
var:
var (child): 15
Has anyone an idea how to print the $var of the child, without copying
the method in every child class?
thanks in advance,
Norbert
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Inherit Methods
*parent* keyword does not belong to PHP5 !!! It's there in PHP4 as well!
On 8/8/05, Edwin Barrios [EMAIL PROTECTED] wrote:
Hi !
you have to defined protected $var.
This is a example where php5 OO model has a little ambiguities.
Thing a few in your problem !, on de child class scope $var it's
private then when yo execute printVar(), you aren't executed on parent
scope you are calling a copie on child scope, then you don't have
access to $var. Only when you use parent scope throw
parent::printVar() , you realy calling the parent class instance into
your child then print result.
Then when you want to have a variable for being used on a public
inherit method you have to defined protected
On 8/8/05, Norbert Wenzel [EMAIL PROTECTED] wrote:
Is it possible to run inherited methods in the scope of the child class?
In my case I have an abstract class called 'Company' and some child
classes. There is a non abstract function in 'Company' which prints
'$this-phoneList'. That function should be the same to all child
classes, without rewritting it in every class.
I call the printing method via the child class like
$childObject-printPhoneList();
The call seems to be handed over to the parent class 'Company' which is
fine. But the $this points to the phoneList of the abstract parent
class. So the phoneList in the abstract class seems to be unset, since i
have set the phone list in the child class.
Here's a short example, showing what I mean:
?php
abstract class AbstractClass {
private $var;
public function printVar() {
echo('var: ' . $this-var . 'br');
}
}
class ConcreteClass extends AbstractClass {
public function __construct($var) {
$this-var = $var;
}
public function printVarChild() {
echo('var (child): ' . $this-var . 'br');
}
}
$cl = new ConcreteClass(15);
$cl-printVar();
$cl-printVarChild();
?
Output is:
var:
var (child): 15
Has anyone an idea how to print the $var of the child, without copying
the method in every child class?
thanks in advance,
Norbert
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
M.Saleh.E.G
97150-4779817
