在线手册：中文英文

SplMaxHeap::compare

(PHP 5 >= 5.3.0)

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

说明

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

Compare value1 with value2.

参数

value1: The value of the first node being compared.
value2: The value of the second node being compared.

返回值

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.

在线手册：中文英文

用户评论:

sixd at php dot net (2010-12-21 12:26:15)

Note the definition of SplMaxHeap::compare() is different from SplMinHeap::compare()