SplMaxHeap::compare
(PHP 5 >= 5.3.0, PHP 7)
SplMaxHeap::compare — Compare elements in order to place them correctly in the heap while sifting up
Description
protected SplMaxHeap::compare ( mixed $value1 , mixed $value2 ) : int
Compare value1 with value2.
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, 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.
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https://www.php.net/manual/en/splmaxheap.compare.php