Thanks for the explanation. Yes, let us drop call-time pass-by-reference!! I'm with you. ;-)
/dorgon
Jason Wong wrote:
On Friday 20 June 2003 01:11, dorgon wrote:
Maybe, there's a setting for this in php.ini.
yes. there is:
Yes, I know there is ;-) The 'maybe' is maybe you have it set different on the two systems.
>>declaration of [runtime function name](). If you would like to enable >>call-time pass-by-reference, you can set >>allow_call_time_pass_reference to true in your INI file.
"pass-by-reference" has not been dropped, it is "Call-time pass-by-reference" which is being deprecated.
so call-time pass-by-reference is giving parameters as reference to functions, e.g.
function returnObjectToAccumulator(&$obj) {...}
If this feature is really dropped, how would you implement ConnectionPools for DB-connections for instance, or any classes managing a set of object and providing them by returning references?
many OOP design patterns (primarily adopted from java) would not be possible anymore. I think this would be worth talking about.
Is there any plausible reason for that decision?
"Call-time pass-by-reference" ============================= function doo($i_may_or_may_not_be_a_reference) { $i_may_or_may_not_be_a_reference++; }
$i = 1; doo($i); echo $i; // 1 doo(&$i); echo $i; // 2
// here doo() is not defined to have parameters passed by reference. The decision on whether to pass by reference is made at run-time, hence call-time pass-by-reference. It is this behaviour which is being deprecated.
So in the newer versions of PHP if call-time pass-by-reference is disabled and you wish to pass parameters by reference you'll have to define your functions accordingly:
function doo(&$i_am_passed_by_reference) { ... }
-- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
