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PHP: SplHeap::top - Manual
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    SplHeap::top

    (PHP 5 >= 5.3.0, PHP 7)

    SplHeap::top — Peeks at the node from the top of the heap

    Description

    public SplHeap::top ( void ) : mixed

    Parameters

    This function has no parameters.

    Return Values

    The value of the node on the top.

    Errors/Exceptions

    Throws RuntimeException when the data-structure is empty.

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