RE: [PHP] Brain Death - [PHP] functions classes
| From: | Robert Cummings | Date: | Sat, 26 Aug 2006 16:25:23 +0000 |
| Subject: | RE: [PHP] Brain Death - [PHP] functions classes | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-241130@lists.php.net to get a copy of this message | ||
On Sat, 2006-08-26 at 16:51 +0100, Alex Turner wrote:
> Rob,
>
> I'd go along with the setting a var to null issue (in the cases
> I have worked so far on, there has not been a need to set variables
> to null).
Maybe so, but if a variable ever happens to contain null and you're not
aware of it, the value won't get updated.
> However, what is wrong with is_null()?
As a function call it's an order of magnitude slower than === null since
it incurs the overhead for a function call. There's nothing wrong with
your use of the is_null() function, but === null is just as clear, and
much faster so I thought I'd throw at you in line with your coffee
comment :)
Cheers,
Rob.
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