Req #52583 [Com]: Improved casting and hinting, new magic method __cast()

From: Date: Fri, 03 May 2013 19:16:50 +0000
Subject: Req #52583 [Com]: Improved casting and hinting, new magic method __cast()
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-178787@lists.php.net to get a copy of this message
Edit report at https://bugs.php.net/bug.php?id=52583&edit=1

 ID:                 52583
 Comment by:         mkutschker-php at yahoo dot com
 Reported by:        martin dot leucht at gmail dot com
 Summary:            Improved casting and hinting, new magic method
                     __cast()
 Status:             Open
 Type:               Feature/Change Request
 Package:            Class/Object related
 Operating System:   Irrelevant
 PHP Version:        Irrelevant
 Block user comment: N
 Private report:     N

 New Comment:

If we have both casting (the other one being #46128) then perhaps the names should be __castFrom()
and castTo(). Or perhaps even __castFromInt() and castToInt() and so on.


Previous Comments:
------------------------------------------------------------------------
[2012-09-05 02:53:14] aharvey@php.net

Not a dupe: request #46128 covers casting the other way. (That alone is probably a good argument for
changing the proposed magic method name.)

------------------------------------------------------------------------
[2012-09-04 14:20:42] qfox at ya dot ru

dup?: https://bugs.php.net/bug.php?id=46128&thanks=6

------------------------------------------------------------------------
[2010-10-19 11:41:50] rayro at gmx dot de

pretty nice, awesome feature!
but i have some recommendations on this:

1) is it true that i cannot cast to a boolean false? what about throwing the error if no return was
made? the user is able to throw some exception or will simple not return anything to use the default
error mechanism...

2) i think there should be 2 additional types of functions covering your 2 solutions by simply
change the name. for your case 1 this should be __cast, whereas 2 could be __hint? the essential
difference is that __hint will be called in the functions arguments and __cast will be called
elsewhere?

------------------------------------------------------------------------
[2010-10-03 18:45:29] + at ni-po dot com

@degeberg: Doesn't the RFC cover casting the other way round? I.e. Class -> Scalar

------------------------------------------------------------------------
[2010-08-11 16:54:01] degeberg@php.net

See: http://wiki.php.net/rfc/class_casting_to_scalar

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