SplMaxHeap::compare
(PHP 5 >= 5.3.0)
SplMaxHeap::compare — Compare elements in order to place them correctly in the heap while sifting up.
설명
protected int SplMaxHeap::compare
(
mixed $value1
,
mixed $value2
)
인수
-
value1
-
The value of the first node being compared.
-
value2
-
The value of the second node being compared.
반환값
Result of the comparison, positive integer if value1 is greater 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.