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Asked: 2026-05-11T07:15:19+00:00

Here is part of my code define(‘DIR_APP’, ‘app/’); class Questions { const QUESTIONS_FILE =

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Here is part of my code 

define('DIR_APP', 'app/');   class Questions     {           const QUESTIONS_FILE = DIR_APP . 'questions.xml';     }

Seems when I take the define()‘d constant out of my class constant declaration, it works fine. But when I add it it throws this error:

Parse error: syntax error, unexpected '.', expecting ',' or ';' in /home/public_html/app/classes/Questions.class.php on line 7

So how can I get my define()‘d constant in there? I assume it is not correctly looking up the DIR_APP thinking it might of been defined within the class. How do I get it to resolve it globally?

Thank you

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1 Answer

  1. It can’t be done.

    Quote from http://www.php.net/manual/en/language.oop5.constants.php :

    ‘The value must be a constant expression, not (for example) a variable, a class member, result of a mathematical operation or a function call’

    I think you could

    define(‘QUESTIONS_FILE’, DIR_APP . ‘questions.xml’);

    but that is global.

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