PriorityQueueHeap::compare

    (Available since version 1.0)

    PriorityQueueHeap::compare — Compare elements in order to place them correctly in the heap

    Description

    protected int PriorityQueueHeap::compare ( mixed $value1 , mixed $value2 )

    Compare value1 with value2. The exact result depends on the callback, PriorityQueueHeap::$callback_compare.

    Note:

    Having multiple elements with the same value in a Heap is not recommended. They will end up in an arbitrary relative position.

    Parameters

    value1

    The value of the first node being compared.

    value2

    The value of the second node being compared.

    Return Values

    Result of the comparison.

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