dir2json is a PHP CLI script that can be used to ouput the contents of a whole directory tree into a JSON-formatted file.
To properly understand it, let’s do a quick example. Suppose we have a directory tree structure like this:
This would be the file generated by dir2json:
The json conversion is handled by the native php json_encode function (available in PHP 5 >= 5.2.0, PECL json >= 1.2.0, PHP 7). For further info on PHP’s json_encode function, read here: http://php.net/manual/en/function.json-encode.php
The generated JSON object will adopt the following conventions:
- If a folder contains only files (without subfolders), they will be listed as items of a single array.
- If a folder contains one or more subfolders, each one will be listed as a key/value array.
- If a folder contains files and subfolders, both will be listed as a key/value array: each file will have an auto-generated numeric key starting from 0 (numbers already used by a subfolder’s name will be skipped).
The code it’s meant to be used as a dedicated CLI script, but you can also execute it from a standard, web-hosted PHP page by populating the $argv array directly from code. If you need further help to implement it into a PHP page, contact me and I’ll update the docs accordingly.
php dir2json <targetFolder> <outputFile> [JSON_OPTIONS]
JSON_HEX_QUOT, JSON_HEX_TAG, JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK,
JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT, JSON_PRESERVE_ZERO_FRACTION,
The behaviour of these constants is described on the JSON constants page in the official PHP docs:
This example uses JSON_PRETTY_PRINT, a constant that will tell json_encode to output the JSON result in a readable way using spaces, linefeeds and indents.
php dir2json ./images out.json JSON_PRETTY_PRINT
If you need more info, please read this article.