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  • SplMinHeap::compare()

    (PHP 5 >= 5.3.0, PHP 7)

    Compare elements in order to place them correctly in the heap while sifting up

    说明

    protectedSplMinHeap::compare(mixed $value1, mixed $value2) : int

    Compare $value1with $value2.

    参数

    $value1

    The value of the first node being compared.

    $value2

    The value of the second node being compared.

    返回值

    Result of the comparison, positive integer if $value1 is lower than $value2, 0 if they are equal, negative integer otherwise.

    Note:

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