Can you share variables across objects created from the same class?

[Anthony Davis]

Hello all,
Can someone please tell me if there is a way to declare variables
within a class that can be shared among each new object created from
this class?
For instance I have the following:

class DB {
var $db;
var $host;
var $un;
var $pw;
var $connected;
var $connections;

function DB() {
$host="myserver .com";
$un="username";
$pw="password";
$this->db=null;
}

function Connect($databa se) {
if(!$connected) {
/* do your connection stuff….. */
$connected=true ;
$connections=1;
}
$this->db=$database ;
$connections++;
}
}

so that the variable $db which holds the name of the currently
selected database will change with each instance of an object being
created from this class, but the variable $connected and $connections
will be shared between each instance of an object.

Thank you in advance for your answers.
Anthony

[Zurab Davitiani]

Re: Can you share variables across objects created from the same class?

Anthony Davis wrote on Tuesday 05 August 2003 09:56:
[color=blue]
> so that the variable $db which holds the name of the currently
> selected database will change with each instance of an object being
> created from this class, but the variable $connected and $connections
> will be shared between each instance of an object.[/color]

I may have misunderstood what you are saying, but I think a cleaner way to
accomplish this would be to

- create a ConnectionPool class which holds $connected, $connections and
other related properties, and also has an array of DBConnection objects;
- create a DBConnection class (similar to your DB class) and add an instance
to the array in ConnectionPool for every new connection.

You may even have a property within the DBConnection class that references
the ConnectionPool object(s) that it belongs to for easy access from
DBConnection.

I don't know what your final goal is, but I thought that's where you are
headed.

--
Business Web Solutions
ActiveLink, LLC

https://www.active-link.com/intranet/

[matty]

Re: Can you share variables across objects created from the same class?

Nikolai Chuvakhin wrote:
[color=blue]
> adavis@addpower .com (Anthony Davis) wrote in message
> news:<e52b1e55. 0308050856.5a96 de38@posting.go ogle.com>...[color=green]
>>
>> Can someone please tell me if there is a way to declare variables
>> within a class that can be shared among each new object created from
>> this class?[/color]
>
> Not really, unless you want to declare them as global...
>
> Cheers,
> NC[/color]

You have to wait till PHP 5 for static/class variables
--
Matt Mitchell - AskMeNoQuestion s
Dynamic Website Development and Marketing

[Anthony Davis]

Re: Can you share variables across objects created from the same class?

matty <matt+nntp@askm enoquestions.co .uk> wrote in message news:<K3XXa.544 54$xd5.3348908@ stones.force9.n et>...[color=blue]
> Nikolai Chuvakhin wrote:
>[color=green]
> > adavis@addpower .com (Anthony Davis) wrote in message
> > news:<e52b1e55. 0308050856.5a96 de38@posting.go ogle.com>...[color=darkred]
> >>
> >> Can someone please tell me if there is a way to declare variables
> >> within a class that can be shared among each new object created from
> >> this class?[/color]
> >
> > Not really, unless you want to declare them as global...
> >
> > Cheers,
> > NC[/color]
>
> You have to wait till PHP 5 for static/class variables[/color]

Does anyone know when PHP 5 is scheduled for release?
thanks