What does the brakets mean and where to read more
return $container->{$resource};
views:
100answers:
2
+3
A:
Two possibilities:
-
$resource = "score"; // set the name dynamically
return $container->{$resource}; // same as return $container->score;
typo / beginner mistake
The programmer meant to type:
return $container->resource; // returns resource public member variable
Yada
2010-02-20 14:49:53
It's unlikely to be a typo. It would be hard to "mistype" a dollar sign and two brackets and not notice.
Ilia Jerebtsov
2010-02-20 14:57:27
True. The {} is hard to mis type, but I've seen a lot of bugs where programmer type return $container->$resource;
Yada
2010-02-20 15:00:21
+4
A:
The brackets are to make use of variable variables. It makes it easier to distinguish between:
// gets the value of the "resource" member from the container object
$container->resource;
and
// gets the value of the "foo" member from the container object
$resource = 'foo';
$container->$resource;
You can read more here: http://php.net/manual/en/language.variables.variable.php
Ilia Jerebtsov
2010-02-20 14:51:58