defining constants in the configuration?

[shagey36]

Hello everybody,

I apologize if this is more of an apache question than it is a php question but I figured I'd give this a shot.

So I have an apache server running multiple domains and I would like to define constants for each domain without having to explicitly include some sort of constants file at the beginning of every single file. Is there a good place to define constants so they can be accessed anywhere in a given domain?

I stumbled across 'auto_prepend_file' and that seems like it'll do the trick but I won't want to prepend the same file across all domains.

For example:
I have /var/www/blah.com/constants.php
and /var/www/foo.com/constants.php

I would like the correct constants.php file to get included when I go to the domain.

Any ideas?

[kbluhm]

Maybe try naming the constants after the domain? Then if it exists, include it!

PHP Code:

// Grab hostname
$host = strtolower( $_SERVER['HTTP_HOST'] );

// Remove `www.` prefix if necessary
$host = preg_replace( '/^www\./', '', $host );

// Name the file to be included
// - www.google.com -> `../const/google.com.php`
$file = '../const/' . $host . '.php';

// If the file exists, include it
if ( is_file( $file ) )
{
    include $file;
}