Ferenc Kovacs wrote on 28/11/2014 13:51:
On Fri, Nov 28, 2014 at 2:14 PM, Sebastian Krebs <krebs....@gmail.com>
wrote:
2014-11-28 2:13 GMT+01:00 Bostjan Skufca <bost...@a2o.si>:
Hello everyone,
this is a proposal to add new function to PHP core: spl_object_id()
The story:
========
Recently I was debugging some larger libraries and sorely missed a
function
that would return an object ID. A function called spl_object_hash()
exists,
but it returns identical hashes for equal objects.
It returns unique IDs for existing objects. A hash is only reused only when
the corresponding object was removed by the GC earlier.
So actually asking me it makes more sense to "fix" the behaviour of
spl_object_hash(),
yeah, the more I think about it the more I feel that the current
implementation is just a landmine.
Is there any BC implication of changing the implementation? Or is it
just that we don't know what the alternative should be?
Looking at the implementation of spl_object_hash() [1] it already uses
Z_OBJ_HANDLE_P(obj) as part of the output, so presumably that isn't
enough to guarantee uniqueness anyway? (Which then leads to the question
of what the advantage of an spl_object_id() function would actually be,
if it's *less* unique than spl_object_hash())
[1] http://lxr.php.net/xref/PHP_TRUNK/ext/spl/php_spl.c#756
--
Rowan Collins
[IMSoP]
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