# MongoDB\BSON\Document::fromJSON

(mongodb >=1.16.0)

MongoDB\BSON\Document::fromJSON — Construct a new document instance from a JSON string

### 说明

final static public MongoDB\BSON\Document::fromJSON(string `$json`): MongoDB\BSON\Document

Converts an » extended JSON string to its BSON representation.

### 参数

`json` (string)

  JSON value to be converted.

### 返回值

Returns a new MongoDB\BSON\Document instance.

### 错误／异常

- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
- Throws MongoDB\Driver\Exception\UnexpectedValueException if the JSON value cannot be converted to a BSON document (e.g. due to a syntax error).

### 参见

- MongoDB\BSON\Document::fromPHP() - Construct a new document instance from PHP data
- MongoDB\BSON\Document::fromBSON() - Construct a new document instance from a BSON string
- » MongoDB Extended JSON
- » BSON Types

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