Posted by Rik on 03/09/07 12:48

weetat <weetat.yeo@gmail.com> wrote:

> Hi all ,
>
> I am using php version 4 which did not have private method access.
> How to prevent the user call the object constructor as shown below :

Enforcing a singleton in PHP4 is tricky. I usually end up with some pseu=
do =

code triggerering a (fatal) error in the constructor:

$info =3D reset(debug_backtrace());
if(!isset($info['class'])
|| $info['class'] !=3D get_class($this)
||!isset($info['type'])
||$info['type']!=3D'::'
||!isset($info['function'])
||$info['function']!=3D'getInstance'
){
trigger_error('This is a singleton class, only use =

class::getInstance()', E_USER_ERROR);
}

HTH
-- =

Rik Wasmus
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