ZF2 - 你如何访问会话容器中的会话变量？

Question

I create a container like so:

$frontend = new SessionContainer('frontend', null);

I set a variable like so:

$frontend->offsetSet('foo',$bar);

My question is, when you need to access this somewhere else, are you really supposed to instantiate a new SessionContainer with the same key everywhere you go and grab the var? Or, is the session data being passed around in another variable available in the controller or something?

Answer 1

The preferred practice is to directly access the session values as if they were properties of the instantiated container object.

$frontend = new SessionContainer('frontend');
$bar = $frontend->foo;

The session container class does the rest of the work behind the scenes by calling:

$frontend->__get('foo');

which in turn calls:

$frontend->offsetGet('foo');

Using the first example above helps improve readability. By the same token you can use:

$frontend->foo = 'bar';

Behind the scenes this calls:

$frontend->__set('foo', 'bar');

... and then:

$frontend->offsetSet('foo', 'bar');