Bug #48856 [Asn->Opn]: PDO_Statement->bindParam binds multiple parameters of the same name

Edit report at https://bugs.php.net/bug.php?id=48856&edit=1 ID: 48856 Updated by: kalle@php.net Reported by: dhammari at q90 dot com Summary: PDO_Statement->bindParam binds multiple parameters of the same name -Status: Assigned +Status: Open Type: Bug Package: PDO Core Operating System: Linux 2.6.27-gentoo-r8 PHP Version: 5.2.10 -Assigned To: dbs +Assigned To: Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2015-09-26 01:33:33] a791446794 at 163 dot com I want this feature too! When sql has subquey with the same condition,it is fairly that use the same :token will be maintainable and efficient. ------------------------------------------------------------------------ [2009-11-16 13:42:59] dbs@php.net I've referred this bug to the PDO discussion list, as there are ongoing discussions about the future design of PDO and this bug seems to be pertinent to that discussion. ------------------------------------------------------------------------ [2009-09-24 02:59:16] dbs@php.net Yes, it was a limitation back then - and while it might work for some PDO drivers, I believe the problem was that it was not guaranteed to work with all PDO drivers - and therefore discouraged. It would be best for us to talk to a current PDO developer to get the real deal on the current situation. ------------------------------------------------------------------------ [2009-09-23 18:07:30] dhammari at q90 dot com Hi Bjori, It seems to me that the ability to use the same token for multiple binds has arisen fairly recently. I recall earlier releases of php 5 berating me for attempting to reuse a token in this manner as recently as several months ago. I have looked up documentation on this behavior before, and the articles I have found seem adamant that multiple binding from a single token should be disallowed. For example, please take a look at these previous bug reports from 2005 and 2007: http://bugs.php.net/bug.php?id=33886 http://bugs.php.net/bug.php?id=40417 The discussions in these articles seem to reach a consensus that every time a variable in a prepared PDO statement is bound, it should be bound to a unique token. While I think it is useful to bind multiple parameters to a single token, I don't want to start writing code that relies on this feature until I am assured that this is the intended behavior. Otherwise, my code would not be future proof and could be invalidated by an upcoming release. I would appreciate it if you could clarify the intended behavior and update php's documentation accordingly. Sincerely, Dan Hammari ------------------------------------------------------------------------ [2009-09-23 17:29:56] bjori@php.net No idea. Its been like this for almost 4years.. Dan? Was this originally a limitation in PDO? ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=48856 -- Edit this bug report at https://bugs.php.net/bug.php?id=48856&edit=1