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Date: Sat, 10 May 2003 13:03:57 +0900
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To: "Paul Lunceford" <luncep@comcast.net>
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Subject: Re: [PHP-DEV] PHP Objects and cyclical references - HELP
From: moriyoshi@at.wakwak.com (Moriyoshi Koizumi)

Hi,

This list is intended for the development of php runtime, not for such 
user questions. Please ask your questions at php-general@lists.php.net.

Thanks.

Moriyoshi

hint: use "&" 

"Paul Lunceford" <luncep@comcast.net> wrote:

> I am just getting to know PHP and am a big proponent of object structures.
> I am trying to use PHP classes that get instanciated on the fly from data
> within MySQL.  My problem is this.  If I have a Department class that has as
> a variable Employees and an Employee class (along with an Employees class
> with a list variable for getting sets of employees) that has a variable
> Division (to navigate back and forth).  I seem to have problems getting the
> objects to point to one another.  PHP does not seem to like cyclical
> references and makes copies of my objects.  So if I have the following
> function in my Division class:
> 
> function getEmployees()
> {
>   $myEmployees = new Employees($this->DivisionID);
>    forEach ($myEmployees->list as $employee)
>    {
>       $employee->Division = $this;
>       $this->Employees[$employee->EmployeeNumber] = $employee;
>    }
> }
> 
> the reference of $employee->Division becomes only a copy of the $this
> object.  This is a problem because the first employee to go through the loop
> when asked other employees within his division sees none, thinking himself
> the only employee of the division.  Does anyone know the solution?  Please
> email response to paul.luceford@enterworks.com.  Thanks.