zend framework 2 constants

Question

I have to declare constants which are available anywhere in application. In Zend Framework 1 we used to declare in application.ini as :

constants.NAME_TITLE = "User Name",

Where and how do we do this in Zend Framework 2 ?

How would you do it without a framework? If only there was a function that let you `define` constants. — Crisp, May 09 '13 at 18:39
@Sam These constants are to define global variables which I set in configuration for ex. LINK_TO_SOAP_SERVICE , their values are different for different environments. So I set them at one place and use them in entire project. — user2367458, May 09 '13 at 18:51
@Crisp : I can do it with a define() in php , but I wanted to follow the recommended way if there is in zend framework 2 as there was in zend framework 1 — user2367458, May 09 '13 at 18:53

score 9 · Answer 1 · edited May 23 '17 at 12:33

9

I have found solution here. You have to create storage class in Model. In that class you can create as many constants as you want.

<?php  
namespace Application\Model;
class Application {
    const EMAIL = 'email@gmail.com';
}

Now it can be accessed everywhere by:

NameOfModule\Model\NameOfModel::NAMEOFCONSTANT

So you can for example print the constant in a view like this:

<?php echo Application\Model\Application::EMAIL; ?>

edited May 23 '17 at 12:33

Community

1
1

answered May 25 '13 at 23:57

Black

9,541
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Thanks for this! I'm also placing arrays in there by serializing them: http://stackoverflow.com/questions/1290318/php-constants-containing-arrays Reduces a lot of duplicated code in your modules! – Armfoot Jun 27 '13 at 07:41
const UPLOAD_PATH = getcwd() . '/public/uploads/'; why this is generating error? – Katty Dec 28 '16 at 11:30

score 2 · Answer 2 · answered Jun 14 '16 at 14:13

2

For Zend Framework 2, one alternative solution.

you can define your global variable inside config/autoload/local.php

 'array_name' => array(
      'variable_name' => value,
 ),

and use it anywhere just like :

$this->config = $obj->getServiceLocator()->get('config'); //create config object
$this->you_variable = $this->config['arrayname']['variable_name']; // fetch value
echo $this->you_variable; // print value

answered Jun 14 '16 at 14:13

Maulik Patel

650
5
22

what is $obj ? don't you think it will give error ? – iit2011081 Dec 16 '16 at 19:47
If you're using PHP 5.4 or higher, you can do it in 1 line, like so: `echo $obj->getServiceLocator()->get('config')['arrayname']['variable_name'];` – evilReiko Oct 30 '17 at 12:22

score 0 · Answer 3 · answered Jun 04 '13 at 10:48

0

You can also write function and variable that can be accessed any where of your application like controller,model and views.

<?php  
namespace Webapp;

class ControllerName
   {
        const EMAIL     = 'email@gmail.com';

        public static function myFunction()
          {
             echo "doing work well.";
          }
    }

and you can access this class function and property like

<?php echo Webapp\ControllerName::EMAIL; ?>

and

<?php echo Webapp\ControllerName::myFunction(); ?>

answered Jun 04 '13 at 10:48

Md Mehedi Hasan

1,733
1
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What you said is technically correct. For sake of clarification, normally no one should put constants and static methods in a controller (unless if it's a rare case where they can belong nowhere except in that controller) – evilReiko Oct 30 '17 at 12:26

score 0 · Answer 4 · answered Dec 06 '16 at 07:11

You can define, assign and access CONSTANT as follows: Use these two classes with alias:

use Zend\Config\Config as Zend_Config;
use Zend\Config\Processor\Constant as Zend_Constant;

And then use below code to your any function of the controller class:

define ('TEST_CONST', 'bar');
// set true to Zend\Config\Config to allow modifications
$config = new Zend_Config(array('foo' => 'TEST_CONST'), true);
$processor = new Zend_Constant();
$processor->process($config);
echo $config->foo;

It will give o/p:

bar

zend framework 2 constants

4 Answers4