README

Simple environment variables loader library for PHP. It loads environment variables from a .env file. It requires PHP 7.2+ and is compliant with PSR-1, PSR-4, PSR-12.

Installation

Install via the composer utility.

composer require "phoole/env"

or add the following lines to your composer.json

{
    "require": {
       "phoole/env": "1.*"
    }
}

Usage

• Put your environments in file .env. By default, existing environment variables are not overwritten.

  # this is comment line
  BASE_DIR = /usr/local  # spaces allowed
  
  # use reference here
  APP_DIR = ${BASE_DIR}/app   # /usr/local/app
  
  # use bash style :- or :=
  TMP_DIR = ${SYSTEM_TMP_DIR:-${APP_DIR}/tmp} 

  See shell variable expansion for :- and := usage.

• Load and use your env variables in PHP script

  <?php
  # load env file, will NOT overwrite existing env variables
  (new Phoole\Env\Environment())->load(__DIR__ . '/.env');
  
  // use env values
  echo getenv('APP_DIR');

Features

• Support shell default values, ${param:-new} or ${param:=new}

• By default, WILL NOT overwrite any existing environment variables. which makes possible for importing environment variables from command line in the case of docker.

  To overwrite existing env variables,

  env->load('./.env', TRUE);

• Relaxed syntax (not compatible with bash) in env file

  # spaces before and after '=' is allowed. NOT recommended though
  ROOT_DIR = /var/tmp
  
  # same as above
  ROOT_DIR=/var/tmp
  
  # same as above
  ROOT_DIR="/var/tmp"

• PSR-1, PSR-4, PSR-12 compliant.

Testing

$ composer test

Dependencies

• PHP >= 7.2.0

License

• Apache 2.0