MongoDB\Driver\CursorInterface::isDead

    (mongodb >=1.6.0)

    MongoDB\Driver\CursorInterface::isDead — Checks if the cursor may have additional results

    说明

    abstract public MongoDB\Driver\CursorInterface::isDead(): bool

    Checks whether the cursor may have additional results available to read. A cursor is initially "alive" but may become "dead" for any of the following reasons:

    • Advancing a non-tailable cursor did not return a document
    • The cursor encountered an error
    • The cursor read its last batch to completion
    • The cursor reached its configured limit
    This is primarily useful with tailable cursors.

    参数

    此函数没有参数。

    返回值

    Returns true if additional results are not available, and false otherwise.

    错误／异常

    参见

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