Codeigniter - switch between environments

Question

By default each codeigniter app has defined environment in the ci.php :

define('ENVIRONMENT', 'development');

I need to switch between different countries in my app, and each country has it`s own configuration and database. So I tried to create folder for each country in the 'config' folder and place there all the needed configs. Then I want to select country from a dropdown and switch the environment. Tried like this:

define('ENVIRONMENT', 'mexico');

but this raises error:

Message: Constant ENVIRONMENT already defined

How can I do this ?

Its not recommended to change / unset a constant. But here is an answer on how to do this: http://stackoverflow.com/questions/6455877/can-you-undefine-or-change-a-constant-in-php — Webice, Aug 12 '15 at 11:50
Possible duplicate of http://stackoverflow.com/questions/15328884/multiple-environments-with-codeigniter — Harshal, Aug 12 '15 at 11:53

score 2 · Answer 1 · edited Jun 20 '20 at 09:12

Constant: A constant is an identifier (name) for a simple value. As the name suggests, that value cannot change during the execution of the script

So there is no scope to redefine the value of ENVIRONMENT constant as it is already defined. You can use another constant name [except ENVIRONMENT or the other which are already used by codeignitor] or preferable a variable to maintain your country related version.

score 1 · Answer 2 · answered Aug 13 '15 at 08:41

1

In your root folder there is an file call index.php(image attach below)

In here if you define 'development', It will show your errors on your Codeigniter framework.

For example if database error occurs it shows this kind of error

So this you can check whats wrong and all.

You can test it by define to testing or production. So that you will only get blank page instead of Error Details.

and i there is no use of define a such variable call mexico

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answered Aug 13 '15 at 08:41

Abdulla Nilam

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Thank you man, the approach was not correct. Figured it out by using $this->load->database() dynamically. – Alexander Nikolov Aug 13 '15 at 13:30
@stackUnderflow what you need. Can you clear me bit? It will easy to help you out. – Abdulla Nilam Aug 13 '15 at 14:13
I wanted to switch the country database dynamically. Did it with storing the country in session, checking the country in all controllers constructors and load the proper database. – Alexander Nikolov Aug 13 '15 at 14:45

wilson · Answer 3 · 2015-08-12T12:10:26.640

0

You can try to make this in you index.php

switch( $_POST['env']) { case 'mexico' : define('ENVIRONMENT', 'mexico'); break; //etc ... }

edited Aug 12 '15 at 12:10

answered Aug 12 '15 at 11:54

wilson

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This will determine the config by url. I have only one url with many countries. So when select a country - switch to that country config. Maybe the approach is not correct, maybe I should not do this with environments. – Alexander Nikolov Aug 12 '15 at 11:57
Well, you can make this solution with `$_POST` variable, but it seems to me this is not a good practice to change environnement constant dynamically – wilson Aug 12 '15 at 12:00

score 0 · Answer 4 · answered Apr 15 '21 at 15:31

0

Solution 1: Since ENVIRONMENT is already defined by default in codeigniter, therefore this specific need may achieve through

if (!defined('ENVIRONMENT')) {
    define('ENVIRONMENT', 'mexico');
}

answered Apr 15 '21 at 15:31

Neoark Software

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2
5

score 0 · Answer 5 · answered Apr 15 '21 at 15:33

0

Since ENVIRONMENT is already defined by default in codeigniter, therefore this specific need may achieve through

if (!defined('ENVIRONMENT')) {
    define('ENVIRONMENT', 'mexico');
}

answered Apr 15 '21 at 15:33

Neoark Software

281
2
5

Harshal · Answer 6 · 2015-08-12T12:20:41.597

-1

You may pass the selected country id or any short code in URL using get Method and use the below code in your index.php :

Your URL should be like :

www.example.com?country=IN OR

www.example.com/controller_name/function_name/IN

if ($_GET['country']=='IN')
   define('ENVIRONMENT', 'india');
elseif ($_GET['country']=='us')
   define('ENVIRONMENT', 'us');
else
   define('ENVIRONMENT', 'uk');

edited Aug 12 '15 at 12:20

answered Aug 12 '15 at 12:02

Harshal

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And have a forest of else if else if else if... not a good practice man – wilson Aug 12 '15 at 12:11
1

This is exactly what I do in my controller. And error for already defined var occures. – Alexander Nikolov Aug 12 '15 at 12:15

Codeigniter - switch between environments

6 Answers6