"Use of undefined constant" notice, but the constant should be defined

there are three files: common.php, control开发者_StackOverflow社区ler.php and user.php.

File common.php looks like:

<?php
define("MAXIMUM_NAME_LENGTH", 50);
?>

File controller.php looks like:

<?php
include("common.php");
include("user.php");
$user = new user();
?>

File user.php looks like:

<?php
class user{
private $var = MAXIMUM_NAME_LENGTH;
}
?>

When executing script there is given notice: Notice: Use of undefined constant MAXIMUM_NAME_LENGTH - assumed 'MAXIMUM_NAME_LENGTH' in /.../controller.php on line xxx. I want to share defined values in common.php between other files. How to do it in a proper way?

Generally you would have all defines included by the file that is going to use them. IE: In your example, make the class file have a $class->setMaxNameLength(); method and pass the name length define in through there, that way it won't throw you an error.

Place error_reporting(E_ALL); the line before include("common.php");.

Most probably you'll see something like:

Warning: include(common.php) [function.include]: failed to open stream: No such file or directory in xxx

indicating that your three files are not in the same folder together, or together in a path that is not in your include_path, or a combination of that.

EDIT:

If you are using Suhosin, check your suhosin.executor.include.* settings.