Re: [RFC] ifsetor operator

I vote for nvl(), as the oracle pl/sql function of the same name has this exact semantic. On Apr 16, 2004, at 4:19 PM, Wez Furlong wrote:

It's worth nothing that, if T_IFSETOR was recognized by the scanner as "?:", then Sascha/GCC "?:" operator is also implemented by this patch, by changing the parser rule from this: T_IFSETOR '(' variable ',' expr ')' to this: T_IFSETOR variable ':' expr --Wez. ----- Original Message ----- From: "Marcus Boerger" <helly@php.net> To: <internals@lists.php.net> Cc: "Jason Garber" <jason@ionzoft.com>; "Andi Gutmans" <andi@zend.com> Sent: Friday, April 16, 2004 8:38 PM Subject: [PHP-DEV] [RFC] ifsetor operator

[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 NULL will be used. http://marcus-boerger.de/php/ext/ze2/ze2-ifsetor-20040416-2.diff.txt best regards marcus Friday, 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.txt

currently 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 marcus

According 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

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