MongoCursor::key
(PECL mongo >=0.9.0)
MongoCursor::key — Returns the current result's _id, or its index within the result set
说明
public MongoCursor::key
( void
) : string|int
参数
此函数没有参数。
返回值
The current result's _id as a string. If the result
has no _id, its numeric index within the result set will
be returned as an integer.
参见
- Iterator::key() - 返回当前元素的键
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