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Date: Tue, 20 Jul 2004 11:50:21 -0400
Reply-To: Jason Garber <jason@ionzoft.com>
Organization: IonZoft, Inc.
Message-ID: <1123567599.20040720115021@ionzoft.com>
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Subject: Re: [PHP-DEV] Chaining __set and __get in an expression
From: jason@ionzoft.com (Jason Garber)

Hello Curt,

From=20http://us2.php.net/manual/en/language.operators.assignment.php

   "The value of an assignment expression is the value assigned.
    That is, the value of "$a =3D 3" is 3."

I take this to mean that ($foo->a =3D 'bar') will always return 'bar'
and that is a core feature of the language.  Remember that $foo->a is
the left hand operand, and is only receiving the value.  It is the =3D
operator that returns the value of the expression.

It may also be worth noting that the Associativity of the `=3D` operator
is "Right".

--=20
Best regards,
 Jason                            mailto:jason@ionzoft.com

Tuesday, July 20, 2004, 12:26:46 AM, you wrote:

CZ> Given the class definition:

CZ> <?php
CZ> class Caller {
CZ>   private $x =3D array('a' =3D> false);

CZ>   function __set($name, $value) {
CZ>     echo "setting\n";
CZ>     $this->x[$name] =3D 'foo'; // intentially ignore value
CZ>   }

CZ>   function __get($name) {
CZ>     echo "getting\n";
CZ>     return $this->x[$name];
CZ>   }

CZ> }

CZ> $foo =3D new Caller();

$b =3D $foo->>a =3D 'bar';
CZ> echo "b is " . $b . "\n";

CZ> /* output:
CZ>   setting
CZ>   b is bar
CZ> */=20
?>>=20

CZ> I sort of expected both __set and __get to be called. Is it
CZ> concievable to have them both called?

CZ> The other alternative If possible, is allowing a return value
CZ> from __set() and using that value for the rest of the expression.


CZ> Curt
CZ> --=20
CZ> First, let me assure you that this is not one of those shady pyramid sc=
hemes
CZ> you've been hearing about.  No, sir.  Our model is the trapezoid!