note 89379 rejected from language.operators.logical by danbrown
| From: | danbrown@php.net | Date: | Thu, 05 Mar 2009 17:00:43 +0000 |
| Subject: | note 89379 rejected from language.operators.logical by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-151529@lists.php.net to get a copy of this message | ||
Note Submitter: e dot sand at elisand dot com
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It should be noted that despite what it may look like to some people, you *cannot* imitate
Javascripts shorthand assignment notation (which is similar to ternary notation, though it omits the
middle part).
In JavaScript, you can write:
var text_var = some_var || new String();
That will assign some_var to text_var if it's a "true" statement (aka, if (some_var)
would be true), otherwise it would assign text_var a new String() object.
The PHP documentation gives the slight appearance as if writing:
$text_var = $some_var or new String();
would do the same thing, however it does not - and it's too bad, because it would be useful and
more readable than the new shorthand ternary format, valid for PHP 5.3+ only:
$text_var = $some_var ?: new String();
Unfortunately, it appears that once the "or" condition is seen, it forgets what context it
was in and expects a completely new statement for evaluation, rather than a continuation (as is
possible in JavaScript).