如何破坏symfony 1.4中的对象？ [重复]

Question

Possible Duplicate:
php/symfony/doctrine memory leak?

I need to know if there is a way to destroy an object in symfony 1.4, because I have a cicle for that insert on database.

foreach ($array_data as $payroll_employee)
{
  $discounts = new PayrollDiscounts();
  $discounts->setPayrollId($payroll_id);
  $discounts->save();
  $discounts->free(TRUE);
  unset($discounts);
}

and display this Error:

Fatal error: Allowed memory size of 134217728 bytes exhausted

So I need to know a way to deliver memory.

Answer 1

I have find the solution in these link:

php/symfony/doctrine memory leak?

Thanks for all your advices!