[Proposal] make nested variables can be escaped

[vlucas]

[Proposal] make nested variables can be escaped

[vlucas]

I agree that this should be able to be escaped. I will definitely accept a PR to the v2 branch. I am about to do a v2.0.0 release, so get it in fast! ;)

[xjchengo]

ok, i will send a PR today.

[xjchengo]

I have send a PR. With regard to nested variables, I have following thoughts:

• remove nested variable support in JSON format

  JSON standard doesn't support nested variable. JSON is used primarily to transmit data between a server and web application. If I use a nested variable in JSON, I cannot use it in other place. For example, I cannot directly use a json config with nested variable in a project without phpdotenv package. And the nested variables in json file is a little confusing.

• use built-in variable parsing in php format

  Current nested variables in php config make it unexchangeable between differnt php projects. Because not all projects support this variable type. So I recommand using following way instead:

$baseDir="/var/webroot/project-root";
$cacheDir="${baseDir}/cache";
$tempDir="${baseDir}/tmp";
return array(
    'BASE_DIR' => $baseDir,
    'CACHE_DIR' => $cacheDir,
    'TMP_DIR' => $tmpDir,
);

• make .env loader result as close as to shell parser result

In this way, the config files are more exchangeable.

[vlucas]

The new v2.0.0 release dropped the JSON and PHP loaders to standardize on shell-style only, which was the whole intent of this project in the first place. Please re-submit your changes based on the new v2.0.0 code, and we can review it for merge. Thanks!

[xjchengo]

V2 finally released. I will send a pull request today.