--- %YAML:1.0
test: Empty Sequence
brief: >
    You can represent the empty sequence
    with an empty inline sequence.
yaml: |
    empty: []
php: |
    ['empty' => []]
---
test: Empty Mapping
brief: >
    You can represent the empty mapping
    with an empty inline mapping.
yaml: |
    empty: {}
php: |
    ['empty' => []]
---
test: Empty Sequence as Entire Document
yaml: |
    []
php: |
    []
---
test: Empty Mapping as Entire Document
yaml: |
    {}
php: |
    []
---
test: Null as Document
yaml: |
    ~
php: |
    null
---
test: Empty String
brief: >
    You can represent an empty string
    with a pair of quotes.
yaml: |
    ''
php: |
    ''