About This

This is a optimize for vlucas/phpdotenv in PHP fastcgi application.

vlucas/phpdotenv is excellent. However we found it takes a lot time to read and parse .env file in fastcgi. Thus this library comes out to use native PHP file as environment configuration file.

Advantages:

1. .env.php can be cached by opcache. It takes much less time than .env.
2. Any PHP code can be in .env.php. You can do more things (i.e. include files, calculate something, concatenating strings...).

Disadvantages:

1. .env.php cannot be loaded by other languages like JavaScript, Java, Ruby... But who cares. :)

Install

Composer is suggested to use:

composer require clarence/phpdotenv-dotphp

You can also download the zip file and write your own autoloader.

.env.php

You can use everything of PHP in .env.php. But it is suggested to do as less as possible. An array must be returned:

// A simple .env.php

return [
    "APP_ENV" => "local",
    "APP_DEBUG" => true,
    // ....
];

It is advised that:

1. Do NOT add .env.php file to your version system (i.e. git/svn).
2. .env.php should only store configurations which diffs and which are secrets.

Usage

It is very similar with vlucas/phpdotenv. After you have created a .env.php file, you can use the following code to load it:

// assume .env.php is in current directory (__DIR__)
(new \Clarence\DotEnv\DotEnv(__DIR__))->load();

You can use env($key) function to get the value:

echo env('APP_ENV'); // => local

All environment variables are also stored in $_ENV, $_SERVER. You can also use these super globals.

Note: the default behavior of ->load() is not to override existing environment variables. If you wanna override, please use ->load(true) or ->overload().