MongoDB\BSON\PackedArray::get
(mongodb >=1.16.0)
MongoDB\BSON\PackedArray::get — Returns the value of an index in the array
参数
-
key(int) -
The index to retrieve from the array.
返回值
Returns the value associated with the given index. If the index is not present in the document, an exception is thrown.
注意: When encountering a value encoded as 64-bit integer in the BSON array, the return value of this method will be a MongoDB\BSON\Int64 instance.
错误／异常
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
- Throws MongoDB\Driver\Exception\RuntimeException if the index is not present in the array.
参见
- MongoDB\BSON\PackedArray::has() - Returns whether a index is present in the array
- » BSON Types
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