Question

How do i know that this is global or local environment for my php pages

means i m using Google map Key
there is two different key one for local server and another for that domain where it has to be shown, so how do i write the code for both keys together and page automaticaaly detect that which key have to be use

these things i also want to apply for config files
i want that when site is on the web server , config files take username and password of that server otherwise take local user and password.

Answer 1

You could do something like:

if($_SERVER['HTTP_HOST'] == "localhost")
{
    define("LOCAL_ENV", true);
}
else
{
    define("LOCAL_ENV", false);
}

Then just check whether it is true or false.

Another option is to simply use separate config files, so the config.php on the server is

define("LOCAL_ENV", false);

and the config.php on localhost is

define("LOCAL_ENV", true);