How to construct constants in yii - php

Question

I am using Yii for my web application. In this I kept Constants class in model and extended
from CUserIdentity like..
class Constants extends CUserIdentity
{
CONST ACCOUTN_ONE = 1;
CONST ACCOUTN_TWO = 2;
CONST ACCOUTN_THREE = 3;
}
Here I can access constants like Constants::ACCOUTN_ONE and it will return correct result as 1
But when I start construct constants dynamically means..
$type = 'ONE';
$con = "Constants::ACCOUTN_".$type;
echo $con;
It will dispaly as Constants::ACCOUTN_ONE;
I am expecting here 1
Please correct me if any mistake..

Answer 1

$type = 'ONE';
$con = "Constants::ACCOUTN_".$type;
echo Constant($con);

Answer 2

$type = 'ONE'; // You created string
$con = "Constants::ACCOUTN_".$type; // Created other string
echo $con; // Printed it
You just printed string without evaluating it.
Yes, of couse it will dispaly as Constants::ACCOUTN_ONE;
You need to evaluate your code with eval()(bad), or use this scheme:
echo Constant($con);

Answer 3

I do this with
a class for it a while back:
/**
* Lots of pixie dust and other magic stuff.
*
* Set a global: Globals::key($vlaue); #return void
* Get a global: Globals::key(); #return mixed|null
* Isset of a global: Globals::isset($key); #return bool
*
* Debug to print out all the global that are set so far: Globals::debug(); #return array
*
*/
class Globals
{
private static $_propertyArray = array();
/**
* Pixie dust
*
* #param $method
* #param $args
* #return mixed|bool|null
* #throws MaxImmoException
*/
public static function __callStatic($method, $args)
{
if ($method == 'isset') {
return isset(self::$_propertyArray[$args[0]]);
} elseif ($method == 'debug') {
return self::$_propertyArray;
}
if (empty($args)) {
//getter
if (isset(self::$_propertyArray[$method])) {
return self::$_propertyArray[$method];
} else {
return null; //dont wonna trow errors when faking isset()
}
} elseif (count($args) == 1) {
//setter
self::$_propertyArray[$method] = $args[0];
} else {
throw new Exception("Too many arguments for property ({$method}).", 0);
}
}
}