Posted by Rami Elomaa on 05/12/07 07:25

Mike P2 kirjoitti:
> On May 11, 1:28 am, Toby A Inkster <usenet200...@tobyinkster.co.uk>
> wrote:
>> Mike P2 wrote:
>>> This will allow you to use more than one candidate as you mentioned,
>>> and PHP will not issue a notice this way.
>> That's quite clever code, but it will only work when called from the
>> global scope.
>>
>> --
>> Toby A Inkster BSc (Hons) ARCShttp://tobyinkster.co.uk/
>> Geek of ~ HTML/SQL/Perl/PHP/Python/Apache/Linux
>
> Then I think using a function for this, although it would be useful,
> is hopeless without making a PHP extension in C++. Maybe this could be
> a suggestion to the PHP developers as a keyword in the future.

Rather than adding a new function, I'd prefer an operator that would
select from a list of variables the first one that is set. For example

$foo = $_SESSION['foo'] ?: $_GET['foo'] ?: $_POST['foo'] ?: 'default';

which would be the same as

$foo = isset($_SESSION['foo']) ? $_SESSION['foo'] :
(isset($_GET['foo']) ? $_GET['foo'] :
(isset($_POST['foo']) ? $_POST['foo'] : 'default'));

Or

if(isset($_SESSION['foo'])) {
$foo = $_SESSION['foo'];
} else if (isset($_GET['foo'])) {
$foo = $_GET['foo'];
} else if (isset($_POST['foo'])) {
$foo = $_POST['foo'];
} else {
$foo = 'default;
}

The operator ?: would perform isset on the first operand and return it
if succesful, else it would return the second expression. Any php
developers out there? Wink wink, this would be a nice new feature for
php 6...

--
Rami.Elomaa@gmail.com

"Wikipedia on vähän niinq internetin raamattu, kukaan ei pohjimmiltaan
usko siihen ja kukaan ei tiedä mikä pitää paikkansa." -- z00ze

[Back to original message]