PHP冗余变量

Question

I find myself creating redundant variables in PHP when querying the database.

In Javascript, C# and Java I'm able to directly use an array index operator after a method call, where as in PHP, I can't.

The following example illustrates my point:

// $result -> SELECT t.id
//            FROM table t
//            WHERE t.name = 'bla'
//            LIMIT 1    

$o = mysql_fetch_assoc($result);
$value = $o['valueIndex'];

And this would be invalid:

$value = mysql_fetch_assoc($result)['valueIndex'];

Why is the above invalid, did they do this by design? Or would the grammar get too complicated?

Little fiddle over here.

Answer 1

This will be implemented in PHP 5.4 as it stands currently.

In your specific case you can use following workaround for now:

$value = mysql_fetch_object($result)->valueIndex;

While array derefencing wasn't a planned PHP feature, object access is always possible for function results.