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SplMaxHeap::compare

(PHP 5 >= 5.3.0)

SplMaxHeap::compare — Compare elements in order to place them correctly in the heap while sifting up.

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

Compare value1 with value2.

value1 -

The value of the first node being compared.

value2 -

The value of the second node being compared.

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

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

Описание класса splmaxheap, примеры использования класса splmaxheap.