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Re: out of sheer curiosity... [message #177606 is a reply to message #177600]

Tue, 10 April 2012 18:10

Thomas Mlynarczyk
Messages: 131
Registered: September 2010

Karma:

Senior Member

M. Strobel schrieb:

> In your example above the problem is if you need to do more init work on the data you
> need an extra method call. With the implemented solution you just have to know that
> the constructor is called after setting the vars, and you can detect it, testing the
> unique key or so, but need not do so if you don't care.

Hm, yes, but it still feels wrong to me that the constructor call is not
the very first thing happening to the object.

> Are you aware of the fact that __set() is not called for defined variables?

Yes, it's not called for defined /public/ variables. But you rarely have
public variables in your classes.

> The rationale (or use case) of __set_state() is a mystery to me.

Well, it's used by var_export() when exporting objects. For example,

$a = (object) array( 'foo' => 'bar' );

will be exported as

stdClass::__set_state(array( 'foo' => 'bar', ))

even though PHP should know very well that stdClass has no such static
method. Consequently, writing the output of var_export() to a file and
then re-including it, will fail, thus defeating the whole purpose of
var_export(). Test code:

$a = (object) array( 'foo' => 'bar' );
$s = var_export( $a, true );
var_dump( $a, $s );
$b = eval( "return $s;" );
var_dump( $b );

But __set_state() seems to be some sort of "factory method" which is
called as a static method on a class, passing an array with "state
information" and the method is supposed to create an object, set its
state using the passed array and return the new object. And that would
be exactly what PDO needs to set the data of the row object: no need to
define an array with extra constructor arguments -- just tell PDO the
class name and make sure the class has a __set_state() method defined.
But alas, it's not what PDO does.

Greetings,
Thomas

--
Ce n'est pas parce qu'ils sont nombreux à avoir tort qu'ils ont raison!
(Coluche)

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[Message index]

		out of sheer curiosity... By: Leonardo Azpurua on Tue, 27 March 2012 17:01
		Re: out of sheer curiosity... By: alvaro.NOSPAMTHANX on Tue, 27 March 2012 17:06
		Re: out of sheer curiosity... By: Leonardo Azpurua on Tue, 27 March 2012 17:34
		Re: out of sheer curiosity... By: Thomas 'PointedEars' on Wed, 28 March 2012 19:12
		Re: out of sheer curiosity... By: Leonardo Azpurua on Thu, 29 March 2012 00:53
		Re: out of sheer curiosity... By: M. Strobel on Thu, 29 March 2012 08:00
		Re: out of sheer curiosity... By: Leonardo Azpurua on Thu, 29 March 2012 09:53
		Re: out of sheer curiosity... By: The Natural Philosoph on Thu, 29 March 2012 10:46
		Re: out of sheer curiosity... By: M. Strobel on Thu, 29 March 2012 12:02
		Re: out of sheer curiosity... By: Erwin Moller on Thu, 29 March 2012 12:33
		Re: out of sheer curiosity... By: The Natural Philosoph on Thu, 29 March 2012 13:37
		Re: out of sheer curiosity... By: Erwin Moller on Thu, 29 March 2012 13:59
		Re: out of sheer curiosity... By: The Natural Philosoph on Thu, 29 March 2012 16:58
		Re: out of sheer curiosity... By: Jerry Stuckle on Thu, 29 March 2012 13:39
		Re: out of sheer curiosity... By: Erwin Moller on Thu, 29 March 2012 14:21
		Re: out of sheer curiosity... By: The Natural Philosoph on Thu, 29 March 2012 17:09
		Re: out of sheer curiosity... By: Tim Streater on Thu, 29 March 2012 21:07
		Re: out of sheer curiosity... By: M. Strobel on Thu, 29 March 2012 21:43
		Re: out of sheer curiosity... By: The Natural Philosoph on Fri, 30 March 2012 03:52
		Re: out of sheer curiosity... By: Jerry Stuckle on Thu, 29 March 2012 20:11
		Re: out of sheer curiosity... By: Tim Streater on Thu, 29 March 2012 21:01
		Re: out of sheer curiosity... By: Jerry Stuckle on Thu, 29 March 2012 23:29
		Re: out of sheer curiosity... By: M. Strobel on Sun, 08 April 2012 20:50
		Re: out of sheer curiosity... By: Jerry Stuckle on Sun, 08 April 2012 21:15
		Re: out of sheer curiosity... By: M. Strobel on Sun, 08 April 2012 22:39
		Re: out of sheer curiosity... By: The Natural Philosoph on Sun, 08 April 2012 23:59
		Re: out of sheer curiosity... By: Jerry Stuckle on Mon, 09 April 2012 00:28
		Re: out of sheer curiosity... By: Jerry Stuckle on Mon, 09 April 2012 00:24
		Re: out of sheer curiosity... By: M. Strobel on Mon, 09 April 2012 09:29
		Re: out of sheer curiosity... By: Jerry Stuckle on Mon, 09 April 2012 12:27
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Mon, 09 April 2012 13:20
		Re: out of sheer curiosity... By: Jerry Stuckle on Mon, 09 April 2012 16:03
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Mon, 09 April 2012 18:04
		Re: out of sheer curiosity... By: Jerry Stuckle on Mon, 09 April 2012 18:37
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Mon, 09 April 2012 20:50
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 00:17
		Re: out of sheer curiosity... By: M. Strobel on Tue, 10 April 2012 08:05
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 11:28
		Re: out of sheer curiosity... By: M. Strobel on Tue, 10 April 2012 16:54
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 18:10
		Re: out of sheer curiosity... By: M. Strobel on Tue, 10 April 2012 18:23
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 21:17
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 21:11
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 21:30
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 23:43
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 21:08
		Re: out of sheer curiosity... By: M. Strobel on Wed, 11 April 2012 08:40
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 11:58
		Re: out of sheer curiosity... By: Tim Streater on Tue, 10 April 2012 15:04
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 16:10
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 16:18
		Re: out of sheer curiosity... By: The Natural Philosoph on Tue, 10 April 2012 17:20
		Re: out of sheer curiosity... By: M. Strobel on Tue, 10 April 2012 17:31
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 21:20
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 21:57
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 23:50
		Re: out of sheer curiosity... By: Tim Streater on Tue, 10 April 2012 16:41
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 15:25
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 16:16
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 11:44
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 12:04
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 15:37
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 16:19
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 16:44
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 21:23
		Re: out of sheer curiosity... By: Scott Johnson on Mon, 09 April 2012 18:50
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Mon, 09 April 2012 21:03
		Re: out of sheer curiosity... By: Scott Johnson on Mon, 09 April 2012 22:27
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 00:25
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 10:48
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 12:06
		Re: out of sheer curiosity... By: Leonardo Azpurua on Tue, 10 April 2012 12:22
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 16:20
		Re: out of sheer curiosity... By: Leonardo Azpurua on Tue, 10 April 2012 16:33
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 21:28
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 22:13
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 23:53
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Wed, 11 April 2012 20:17
		Re: out of sheer curiosity... By: Jerry Stuckle on Wed, 11 April 2012 20:30
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 00:22
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 10:43
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 12:11
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 16:15
		Re: out of sheer curiosity... By: M. Strobel on Tue, 10 April 2012 17:09
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 18:17
		Re: out of sheer curiosity... By: M. Strobel on Tue, 10 April 2012 18:25
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 21:21
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 21:34
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Tue, 10 April 2012 23:00
		Re: out of sheer curiosity... By: Jerry Stuckle on Tue, 10 April 2012 23:54
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Wed, 11 April 2012 20:10
		Re: out of sheer curiosity... By: Jerry Stuckle on Wed, 11 April 2012 20:31
		Re: out of sheer curiosity... By: Thomas Mlynarczyk on Wed, 11 April 2012 20:40
		Re: out of sheer curiosity... By: Jerry Stuckle on Thu, 12 April 2012 04:02
		Re: out of sheer curiosity... By: M. Strobel on Thu, 12 April 2012 10:00
		Re: out of sheer curiosity... By: Jerry Stuckle on Thu, 12 April 2012 11:45

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