Set and get global variable in php (ZendFramework)

Question

I am using ZendFramework with PHP, and I want to set and get a variable as a global variable. I.E. I set it in the class of Zend Controller and access it any action in the class.

For example:

<?php

class SubscriptionController extends Zend_Controller_Action
{
    private $EMAIL = false;
    private $USERNAME = false;

First I am validating email addres with ajax call

    public function checkusernameAction()
    {
        $email = //query to find email;     
        if($email){
        $EMAIL = true;
        }else{
        $EMAIL = false;
        }
    }

then I want subscribe user on the basis of private variable again with ajax call

    public function subscribeAction
    {
      if($EMAIL == true)
       {
         //some stuff 
       }        
    }

I am getting private var by $this->EMAIL, but not able to access it

Except for very limited cases, global variables should typically be avoided (too long to get into in a comment...). Instead, maybe you should be referring back to the front controller to get the data. (Though without knowing your exact situation I may be giving you bad advice.) — Corbin
– Corbin, Commented Nov 20, 2011 at 11:26
@Corbin...I modify and briefly describe my question. Please check it and help me — Amritpal singh
– Amritpal singh, Commented Nov 20, 2011 at 13:29

Shakti Singh · Accepted Answer · 2011-11-20 11:20:59Z

6

You can use Zend_Registry to use the variable throughout application.

You can set a variable like this

Zend_Registry::set('email', $EMAIL);

and later can get it like this

$email= Zend_Registry::get('email');

edited Nov 20, 2011 at 11:20

answered Nov 20, 2011 at 11:15

Shakti Singh

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3 Comments

Amritpal singh Over a year ago

Thanx buddy.... this is the good option but I am facing a problem i.e I initialize the registry in init() with ::set('email' false) and again declaring it in other action that I am calling with ajax as ::set('email', true), and then checking it in third function as true or false and everytime i am getting false. Is there any other option to do the same

user336242 Over a year ago

I'm not sure if it will ease your life or not, but you could pass round a config object in the registry which just handles a subset of configuration options?

Viuu -a Over a year ago

The link you mentioned about Zend_Registry is not working

David Weinraub · Accepted Answer · 2011-11-21 05:37:56Z

Looks to me like you are making two distinct requests calling, respectively, checkusernameAction() and subscribeAction(). Since these are distinct requests, the email value you set in the controller during checkusernameAction() will be gone on the second request which calls subscribeAction(). It's the same controller class, but you are looking at two distinct instances, one in each request.

As I see it, you can either:

Pass the email address in each AJAX request, but this seems unlikely since you get the email address from the first call to checkusernameAction().
Save the email in the session during the first checkusernameAction() call and then pick it up during the second subscribeAction() call.
Extract the "get email from username" code into a separate class or method and then call it in both places. After all, you don't want to get bitten by a "race condition" in which the state of the system changes between the two AJAX requests (maybe the user's email changes via some other process or via another set of requests that occur after the first AJAX request containing the call to checkusernameAction().

Anil Kumar · Accepted Answer · 2011-11-21 07:43:06Z

0

You can also used a function for set and get a value.

// Setter function
public function setConsumerKey($key)
{
    $this->_consumerKey = $key;
    return $this;
}

// Getter function

public function getConsumerKey()
{
    return $this->_consumerKey;
}

answered Nov 21, 2011 at 7:43

Anil Kumar

12 bronze badges

1 Comment

Viuu -a Over a year ago

This is to access variable inside a class..But I want to access variable from different controllers and models.Like a catalyst object in catalyst framework

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