Implementation of ArrayAccess

# MongoDB\BSON\PackedArray::offsetUnset

(mongodb >=1.17.0)

MongoDB\BSON\PackedArray::offsetUnset — Implementation of ArrayAccess

### 说明

final public function MongoDB\BSON\PackedArray::offsetUnset(mixed `$key`): void

Unsets the value at the specified index.

### 参数

`key`
  The index being unset.

### 返回值

没有返回值。

### 错误／异常

- Always throws a MongoDB\Driver\Exception\LogicException.

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