Classe Variable

[marc serra <mserra@xxxxxxxx>]

Hi,
i got a problem to write automaticaly varibles in classes.

i got a simple object name test like this

classes Test{
   public     $id;
   public     $text;
}

i want to affect my value to my variable like this
$test = new Test

$champ = id;
$valeur_champ = 4;

$test->$champ = $valeur_champ;

my example is stupid i know but its just for an example.
in fact when i write $test->$champ = $valeur_champ; I want that php 
execute $test->id = 4;

can someone help me plz,

Marc.

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