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Real properties in PHP

php.internals

Marian Kostadinov

21 years ago

I wrote about real properies a few days ago but no one seems to be
interested in it.

I think that it would be nice to have real properties present in PHP. I
mean properties like those in C# but a little more flexible by allowing
getter and setter to have different visibility. See sample code below:

Sample code:
---------------
class person {
public $firstName, $lastName;

public getter fullName { // may also have ()
return "{$this->firstName} {$this->lastName}";
}

public setter fullName ($value) { // may also not have ($value) but
a special var.
list ($this->firstName, $this->lastName) = explode (' ', $value, 2);
}
}

$p = new person;
$p->fullName = "Foo bar";
echo $p->firstName . "\n";
echo $p->lastName . "\n";
echo $p->fullName . "\n";

Sample result:
----------------
Foo
bar
Foo bar

Christian Schneider

21 years ago

Marian Kostadinov wrote:

>   public getter fullName { // may also have ()
>    return "{$this->firstName} {$this->lastName}";
>   }
>
>   public setter fullName ($value) { // may also not have ($value) but
> a special var.
>    list ($this->firstName, $this->lastName) = explode (' ', $value, 2);
>   }

This can be easily done with

function __get($name)
{
$get = "get_$name";

return $this->$get();
}

function __set($name, $value)
{
$set = "set_$name";

$this->$set($value);
}

in your base class (the function names are then get_fullName/set_fullName.

- Chris

Marian Kostadinov

21 years ago

On 8/25/05, Christian Schneider <cschneid@cschneid.com> wrote:

> Marian Kostadinov wrote:
> >   public getter fullName { // may also have ()
> >    return "{$this->firstName} {$this->lastName}";
> >   }
> >
> >   public setter fullName ($value) { // may also not have ($value) but
> > a special var.
> >    list ($this->firstName, $this->lastName) = explode (' ', $value, 2);
> >   }
>
> This can be easily done with
>
> function __get($name)
> {
>          $get = "get_$name";
>
>          return $this->$get();
> }
>
> function __set($name, $value)
> {
>          $set = "set_$name";
>
>          $this->$set($value);
> }
>
> in your base class (the function names are then get_fullName/set_fullName.
>
> - Chris
>

I know this solutions but it does not solve the property visibility
issues and good overloading rules like in common methods. Let's say
you have about 6-7 suche proterties which you expect to overload and
some of the are private e.t.c

Derick Rethans

21 years ago

On Thu, 25 Aug 2005, Christian Schneider wrote:

> This can be easily done with
>
> function __get($name)
> {
>         $get = "get_$name";
>
>         return $this->$get();
> }
>
> function __set($name, $value)
> {
>         $set = "set_$name";
>
>         $this->$set($value);
> }
>
> in your base class (the function names are then get_fullName/set_fullName.

But that has plenty of problems, like I described here:
http://news.php.net/php.internals/17491

Derick

--
Derick Rethans
http://derickrethans.nl | http://ez.no | http://xdebug.org

Ron Korving

21 years ago

I very much like your idea and syntax. I come from a Delphi background (when
it comes to properties) and I must say I like your solution. It's easy and
effective. Yes, it can be done with __set() and __get(), but it sure is
uglier when you have a wide and constant range of properties.

+1 (with 0 karma anyway).

Ron


"Marian Kostadinov" <manchokapitancho@gmail.com> wrote in message
news:bec76cf9050825032978cd308d@mail.gmail.com...
I wrote about real properies a few days ago but no one seems to be
interested in it.

I think that it would be nice to have real properties present in PHP. I
mean properties like those in C# but a little more flexible by allowing
getter and setter to have different visibility. See sample code below:

Sample code:
---------------
class person {
public $firstName, $lastName;

public getter fullName { // may also have ()
return "{$this->firstName} {$this->lastName}";
}

public setter fullName ($value) { // may also not have ($value) but
a special var.
list ($this->firstName, $this->lastName) = explode (' ', $value, 2);
}
}

$p = new person;
$p->fullName = "Foo bar";
echo $p->firstName . "\n";
echo $p->lastName . "\n";
echo $p->fullName . "\n";

Sample result:
----------------
Foo
bar
Foo bar