PHP 8.1.0 RC 2 available for testing


(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplMinHeap::compareCompare elements in order to place them correctly in the heap while sifting up


protected SplMinHeap::compare(mixed $value1, mixed $value2): int

Compare value1 with value2.



The value of the first node being compared.


The value of the second node being compared.

Valor Retornado

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


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

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top