SplHeap::compare
(No version information available, might be only in CVS)
SplHeap::compare — Compare elements in order to place them correctly in the heap while sifting up.
Описание
Compare value1 with value2 .
Throwing exceptions in SplHeap::compare can corrupt the Heap and place it in an blocked state. You can unblock is by calling SplHeap::recoverFromCorruption. However, some elements might not be placed correctly and it may hence break the heap-property.
Список параметров
- value1
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The value of the first node being compared.
- value2
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The value of the second node being compared.
Возвращаемые значения
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.
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