• https://github.com/pmvc-plugin/dotenv
• How to defined array? Ans: use "underscore" plugin
  • https://github.com/pmvc-plugin/underscore

• Prefix with '_', and the key will call constant($k)
• https://github.com/pmvc-app/dimension/blob/master/index.php#L55-L68

• Prefix with escap character such as '\'.
• If detected key start with escap character will bypass underscore process

  * add a config base=xxx at start of file

base=xxx

• Important: only allow extend with same level configs

\PMVC\option('set', 'dimensionCallback', function(){

});

• ?--trace=xxx
• dimension
  • level information
• dimension-level
  • level merge information
• dimension-file
  • different file source merge information

• Deployment environment
  • https://en.wikipedia.org/wiki/Deployment_environment

• APP
  • https://github.com/pmvc-plugin/controller/blob/master/controller.php#L140-L154
• Plug-in
  • https://github.com/pmvc/pmvc/blob/master/src/util_plug.php#L979-L991

• mkdir test_folder
• curl -sS https://getcomposer.org/installer | php

• vim composer.json

{
    "require": {
        "pmvc-app/dimension": "dev-master"
    }
}

• php composer.phar install

• php composer.phar require pmvc-app/dimension