MongoDB\BSON\Undefined
PHP Manual

MongoDB\BSON\Undefined::jsonSerialize

(mongodb >=1.4.0)

MongoDB\BSON\Undefined::jsonSerializeReturns a representation that can be converted to JSON

说明

final public mixed MongoDB\BSON\Undefined::jsonSerialize ( void )

参数

此函数没有参数。

返回值

Returns data which can be serialized by json_encode() to produce an extended JSON representation of the MongoDB\BSON\Undefined.

Note: The output is consistent with the MongoDB\BSON\toJSON() function, which uses the driver-specific legacy extended JSON format. This does not necessarily match the » relaxed or » canonical extended JSON representations used by MongoDB\BSON\toRelaxedExtendedJSON() and MongoDB\BSON\toCanonicalExtendedJSON(), respectively.

错误/异常

参见


MongoDB\BSON\Undefined
PHP Manual