kirill533/json-to-flat-table

A JsonPath implementation in PHP

JsonPath with support for Flat Table Generation

This is a JSONPath implementation for PHP.

This implementation features all elements in the specification except the () operator (in the spcecification there is the $..a[(@.length-1)], but this can be achieved with $..a[-1] and the latter is simpler).

On top of this it implements some extended features:

• Regex match comparisons (p.e. $.store.book[?(@.author =~ /.*Tolkien/)])
• For the child operator [] there is no need to surround child names with quotes (p.e. $.[store][book, bicycle]) except if the name of the field is a non-valid javascript variable name.
• .length can be used to get the length of a string, get the length of an array and to check if a node has children.

Features

This implementation has the following features:

• Convert json tree into a flat table using the set of jsonpath stings.

JsonPath Example

Consider the following json:

{ "store": {
    "name":"My Store",
    "book": [
      { "category": "reference",
        "author": "Nigel Rees",
        "title": "Sayings of the Century",
        "price": 8.95,
        "available": true,
        "authors": ["Nigel Rees"]
      },
      { "category": "fiction",
        "author": "Evelyn Waugh",
        "title": "Sword of Honour",
        "price": 12.99,
        "available": false,
        "authors": []
      },
      { "category": "fiction",
        "author": "Herman Melville",
        "title": "Moby Dick",
        "isbn": "0-553-21311-3",
        "price": 8.99,
        "available": true,
        "authors": ["Nigel Rees"]
      },
      { "category": "fiction",
        "author": "J. R. R. Tolkien",
        "title": "The Lord of the Rings",
        "isbn": "0-395-19395-8",
        "price": 22.99,
        "available": false,
        "authors": ["Evelyn Waugh", "J. R. R. Tolkien"]
      }
    ],
    "bicycle": {
      "color": "red",
      "price": 19.95,
      "available": true,
      "model": null,
      "sku-number": "BCCLE-0001-RD"
    },
    "bicycleSet": [{
      "color": "red",
      "price": 19.95,
      "available": true,
      "model": null,
      "sku-number": "BCCLE-0001-RD"
    },{
      "color": "green",
      "price": 19.75,
      "available": false,
      "model": null,
      "sku-number": "RCADF-0002-CQ"
    }]
  },
  "authors": [
    "Nigel Rees",
    "Evelyn Waugh",
    "Herman Melville",
    "J. R. R. Tolkien"
  ],
  "Bike models": [
    1,
    2,
    3
  ]
}

JsonPath => Result

[$.store.bicycle.price]

19.95

[$.store.name,$.store.bicycle.price,$.store.bicycle.sku-number]

My Store	19.95	BCCLE-0001-RD

[$.store.book[*].price,$.store.book[*].price,$.store.book[*].authors[*],$.store.book[*].title,$.store.name]

8.95	8.95	Nigel Rees	Sayings of the Century	My Store
12.99	12.99	null	Sword of Honour	My Store
8.99	8.99	Nigel Rees	Moby Dick	My Store
22.99	22.99	Evelyn Waugh	The Lord of the Rings	My Store
22.99	22.99	J. R. R. Tolkien	The Lord of the Rings	My Store

Usage

$json = '{... your json as string ...}';
$jsonPath = '[$.your.jsonpath.1,$.your.jsonpath.2]';

$jsonObject = new JsonObject($json);
$result = $jsonObject->getTable($jsonPath);