Constants,Configuration Variables in cake php

Many a times we need to use some variables throughout our application.

CakePHP's Configure class can be used to store and retrieve application or runtime specific values. This class can be used to store anything and can be accessed from any part of the application

For the application of the same we define a file in app/config/config.php

To store a configuration variable:

Configure::write('variable_name', 'value') ;

And to read from configuration:
 
Configure::read('variable_name');

Now we can use Configure::write() or we can also use the $config array

as follows

// Create the config array

$config = array();

// Define config variable

$config['from_email'] = '';

//  Or Define variable as follows

Configure::write('from_email', 'abc@abc.com') ;

 

$config['api_key'] = 'http://www.example.com';

$config['default_timezone'] = 'Europe/London'; 
$config['page_limit'] = 6;


Now our Framework must know about this file so add the following code in /app/config/bootstrap.php

Configure::load('config');


Now read the configuration variables anywhere in the application as follows

Configure::read('from_email');
Configure::read('api_key');
Configure::read('page_limit');