Expression is not allowed as field default value

I am trying to make $app available for the whole class.

First, I get:

“Expression is not allowed as field default value”

Second, on line 5, I get:

Unidentified variable $app

How can I achieve my goal?

class UserController extends XController
{
    var $app = Yii::app();;
    public function init()
    {
        $test = $app;

Here is Solutions:

We have many solutions to this problem, But we recommend you to use the first solution because it is tested & true solution that will 100% work for you.

Solution 1

You can not call a method to set a default value for a variable in PHP, not even if it is a static method. Change it to be set in the constructor:

use Yii;

class UserController extends XController    
{
    var $app;

    function __construct() {
        $this->app = Yii::app();
    }

    public function init()    
    {
        $test = $this->app;
    } 
}

As a side note, you should not use the var keyword in PHP versions > 4, see this question for an explanation.

Note: Use and implement solution 1 because this method fully tested our system.
Thank you 🙂

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