aaronbullard/php-schema

{
    "type": "object",
    "properties": {
        "firstName": {"type": "string"},
        "lastName": {"type": "string"},
        "age": {"type": "integer"},
        "address": {"$ref": "address.json"},
        "phoneNumber": {"type": "object"}
    },
    "required": ["firstName", "lastName"],
    "additionalProperties": false
}