Your parser does not support the standard syntax TOML

[sergeysova]

Array of Tables

The last type that has not yet been expressed is an array of tables. These can be expressed by using a table name in double brackets. Each table with the same double bracketed name will be an element in the array. The tables are inserted in the order encountered. A double bracketed table without any key/value pairs will be considered an empty table.

[[products]]
name = "Hammer"
sku = 738594937

[[products]]

[[products]]
name = "Nail"
sku = 284758393
color = "gray"

In JSON land, that would give you the following structure.

{
  "products": [
    { "name": "Hammer", "sku": 738594937 },
    { },
    { "name": "Nail", "sku": 284758393, "color": "gray" }
  ]
}

You can create nested arrays of tables as well. Just use the same double bracket syntax on sub-tables. Each double-bracketed sub-table will belong to the most recently defined table element above it.

[[fruit]]
  name = "apple"

  [fruit.physical]
    color = "red"
    shape = "round"

  [[fruit.variety]]
    name = "red delicious"

  [[fruit.variety]]
    name = "granny smith"

[[fruit]]
  name = "banana"

  [[fruit.variety]]
    name = "plantain"

The above TOML maps to the following JSON.

{
  "fruit": [
    {
      "name": "apple",
      "physical": {
        "color": "red",
        "shape": "round"
      },
      "variety": [
        { "name": "red delicious" },
        { "name": "granny smith" }
      ]
    },
    {
      "name": "banana",
      "variety": [
        { "name": "plantain" }
      ]
    }
  ]
}

Attempting to define a normal table with the same name as an already established array must produce an error at parse time.

# INVALID TOML DOC
[[fruit]]
  name = "apple"

  [[fruit.variety]]
    name = "red delicious"

  # This table conflicts with the previous table
  [fruit.variety]
    name = "granny smith"

[ghost]

Did you find a PHP parser which does support 2.0 TOML ?

[jamesmoss]

I'm currently rewriting this lib to use proper lexer and parsing stages which should allow me to add support for arrays of tables without going insane. Hoping to finish it in the next few weeks.