Home/ Questions/Q 581235
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-13T14:33:26+00:00

in Yii they use this code: defined(‘YII_DEBUG’) or define(‘YII_DEBUG’,true); i’ve never seen anyone write

  • 0

in Yii they use this code:

 defined('YII_DEBUG') or define('YII_DEBUG',true);

i’ve never seen anyone write like this before (or). is this real php code or some syntax of yii?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    It’s due to short circuit evaluation.

    If defined('YII_DEBUG') returns false, it will try to evaluate the second expression to make the sentence true, defining YII_DEBUG constant as true.

    The final result is that, if the constant were not defined, then define it as being true. If it’s already defined (the value doesn’t matter), then do nothing (as the first expression is true, the second expression does not need to be evaluated for the expression to be true).

    • 0