Question

trying to have a index.php file for 3 different domains… so I need to display different content for the different domains. But want it to work also on “sub folders” for sub folders I mean site1.com/some_content

this is my code but it doesn’t work as I want.

<?php
    $host = $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
    if($host == 'site1.com')  {
        echo "A LOT OF HTML JAVASCRIPT AND CSS";
    }
    if($host == 'site2.com')  {
        echo "Same here but different content";
    }
    if($host == 'site3.com')  {
        echo "Cats and flowers";
    }
?>

any ideas? Thanks!

Answer 1

If you are using Apache, you could define something like this in your .htaccess file:

SetEnvIfNoCase Host "^development.example.com$" APPLICATION_ENV=development
SetEnvIfNoCase Host "^staging.example.com$"     APPLICATION_ENV=staging
SetEnvIfNoCase Host "^example.com$"             APPLICATION_ENV=production

Then, in your index.php file (or whatever you include on every page load) add this:

defined('APPLICATION_ENV')
    || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'production'));

Afterwards, you can read the value of APPLICATION_ENV anywhere in your code to determine what environment you are on at the moment like this:

switch (APPLICATION_ENV) {
   case 'development':
       // do stuff
       break;

   case 'staging':
       // do stuff
       break;

   case 'production':
   default:
       // do stuff
       break;
}

You can point multiple hostnames to the same IP/host in your /etc/hosts (or C:/Windows/System32/drivers/etc/hosts) file like this (assuming it’s on localhost):

127.0.0.1 development.example.com
127.0.0.1 staging.example.com
127.0.0.1 example.com

I know having a global constant is not idea, but it’s better than relying on HTTP_HOST as that can easily be changed.