CODEWITHSUNDEEP
phpdesign-patternsglobal
user1135750
user1135750

Reputation:

Registry or $_ENV

What is the difference between Registry pattern and $_ENV, especially for using in php?

Which of them provide more security and performance?

For example why many coders use $config['deflang'] and Registry pattern instead of just $_ENV['deflang']

Thanks in advance

Upvotes: 1

Views: 195

Answers (4)

Nate
Nate

Reputation: 577

try this:

class Registry {

    public static $instance;

    public function set($key, $val) {
        $this->_reg[$key] = $val;
    }
    public function get($key) {
        return $this->_reg[$key];
    }
    public static function Singleton() {
        $class = __CLASS__;
        if (!(self::$instance instanceof $class)) {
            try {
                if (!defined('REQUIRED')) {
                    throw new Registry_Exception('No direct access.');
                }
            } catch (Registry_Exception $e) {}
            self::$instance = new $class();
        }
        return self::$instance;
    }
    private function __construct() {}

}

$registry = new Registry();
$registry->set('setting', 'value');

Upvotes: 0

Mike B
Mike B

Reputation: 32155

Registry pattern allows you to lazy-load resources.

$db = $_ENV['db_connection']; // The connection must be setup prior

vs

$db = $config->get('db_connection');
// An internal method can check for an existing connection 
// and set one up if needed

Upvotes: 0

ThiefMaster
ThiefMaster

Reputation: 318508

Those two things are completely different.

  • $_ENV is a superglobal array containing all environment variables.
  • $config is some user-defined variable, could be from a config file, a database, etc.

A common way (especially in some frameworks) is to have a config file that contains an array with multiple configs and one environment variable (e.g. FRAMEWORKNAME_ENV) which then selects the active config.

Upvotes: 0

user149341
user149341

Reputation:

$_ENV has a very specific purpose -- it's the process environment. You're not really supposed to throw random data into it. If you want to do that, at least use a global (or, better, a static class member).

Upvotes: 2

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