|
|
Posted by Umberto Salsi on 12/18/07 21:22
boris <bkerzner@gmail.com> wrote:
> Hi. If somebody can help out with this design question, thank you very
> much. Suppose I have a global constant, like an images directory. This
> constant will be referenced from multiple classes. How do I define
> this constant only once while using OOP? I could define the constant
> on one of the classes and then reference it with ClassName::const from
> the other classes, but this ties the constants to one class
> arbitrarily. In Java you can define constants in an interface, and any
> class implementing the interface automatically inherits the constants.
> Is this possible in PHP5? I looked around the Web, but couldn't find
> an example to that effect. Thank you!
>
> ~ Boris
<?php
interface MyConstants {
const IMAGES_DIR = "some/path/";
}
class MyClass implements MyConstants {
function test()
{
echo "Images are here: ", self::IMAGES_DIR, "\n";
}
}
$o = new MyClass();
$o->test(); // ==> Images are here: some/path/
?>
Best regards,
___
/_|_\ Umberto Salsi
\/_\/ www.icosaedro.it
Navigation:
[Reply to this message]
|