Re: Re: what's the difference in the following code?
| From: | Andrew Ballard | Date: | Mon, 20 Oct 2008 03:02:41 +0000 |
| Subject: | Re: Re: what's the difference in the following code? | ||
| References: | 1 2 3 4 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-282122@lists.php.net to get a copy of this message | ||
On Sat, Oct 18, 2008 at 2:34 PM, Robert Cummings <robert@interjinn.com> wrote:
>
> On Sat, 2008-10-18 at 08:44 -0700, Yeti wrote:
> > I would understand it if it was like this ..
> >
> > <?php
> > $search = isset($_GET['search']) ? $_GET['search'] : '';
> > # versus
> > if (isset($_GET['search'])) { $search = $_GET['search']; }
> > ?>
> >
> > In the first statement $search would either be set to $_GET['search']
> > or an empty string, whereas in the second statement $search would only
> > be set, if there is a $_GET['search']
>
> Wrong. They are equivalent. The second is probably just easier to follow
> with a clearly defined default value outside the conditional block.
>
> Cheers,
> Rob.
No, they are not. In the first statement, $search is the value of
$_GET['search'] if the key exists, or an empty string if it does not.
In the second statement, $search is the value of $_GET['search'] if
the key exists or retains its original value if the key does not
exist.
Andrew