codeigniter全局变量需要由多个控制器访问

Question

I am new to codeigniter , In my program i want a variable need to be accessed by multiple controllers, It's not a constant variable, value of variable changes ,

Sorry , My mistake I want to store a JSON object to be precise

Pls help me to figure this out.

Thanks in advance.

Answer 1

Option 1

Since you are using CodeIgniter and sessions then something like this could work out for you:

set it

$someJSONobject = 'JSON';

$this->session->set_userdata('GLOBAL_JSON', $someJSONobject);

retrieve it

$someJSONobject = $this->session->userdata('GLOBAL_JSON');

echo $someJSONobject->subitem;

Make sure you are storing sessions in a DB if you go with this option because Cookie space is VERY limited

Option 2

Even if you are not using CodeIgniters' session implementation then you can do something quite similar in native PHP:

$someJSONobject = 'JSON';

$_SESSION['GLOBAL_JSON'] = $someJSONobject;