I completely agree with the EXACT way Marcus has proposed this operator.
The key is that the first argument must be a Variable, because it is tested
to see if it ISSET(), not if it's null. That is why you can't have any
expression for the first argument - it would be like calling isset('foo'),
which does not make any sense.
I think that this internal function addresses the need exactly, and that
the correct solution has been arrived at.
Thanks Marcus!
Sincerely,
Jason Garber
At 4/16/2004 09:38 PM +0200, Marcus Boerger wrote:
[RFC] ifsetor operator
Hello List,
i also agrre that an internal function is much better. And here is
it as such an internal function (that does not result in an expensive
function call).Synopsis: "ifsetor" "(" value "," default ")"
Returns the value if it exists or a given default value.
Syntax: "ifsetor" "(" variable [ "," expression ] ")"
Semantic:
- The value in question must be a variable.
- The default value can be any expression.
- The default value can be omitted in which case
NULLwill be used.http://marcus-boerger.de/php/ext/ze2/ze2-ifsetor-20040416-2.diff.txt
best regards
marcusFriday, April 16, 2004, 2:12:04 AM, you wrote:
Hello Jason,
here is your operator patch:
http://marcus-boerger.de/php/ext/ze2/ze2-ifsetor-20040416.diff.txtcurrently it uses the following syntax:
$var $: $defaul
which would equal
isset($var) ? $var : $default
Notice that at the moment the operator is '$:' and not '?:'. This is
because i haven't looked on how to solve the conflicts i get when i
use '?:'. If there is more interest in that operator i could invest
more work in trying to fix that problem.best regards
marcusAccording to your options and the possibility to implement this as a
function. That would only work as a parser internal function like empty
or set. Doing so would be very easy i guess. Though it would require a
new keyword say 'ifsetor' (which reflects its purpose more as 'setor').best regards
marcus