Re: distinguish between null variable and unset variable
| From: | Shawn McKenzie | Date: | Thu, 22 Jan 2009 20:17:30 +0000 |
| Subject: | Re: distinguish between null variable and unset variable | ||
| References: | 1 2 3 4 5 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-287031@lists.php.net to get a copy of this message | ||
Daniel Brown wrote:
> On Thu, Jan 22, 2009 at 15:11, Shawn McKenzie <nospam@mckenzies.net> wrote:
>> Or something like this (dunno, just brainstorming):
>>
>> function setornull(&$var)
>> {
>> if (!isset($var)) {
>> return false;
>> }
>> elseif (is_null($var)) {
>> return null;
>> }
>> return true;
>> }
>
> Unfortunately, neither solution would work. isset() will return
> FALSE even for an instantiated and explicitly-defined NULL variable.
>
Yes, damn it!
--
Thanks!
-Shawn
http://www.spidean.com