ArrayIterator::uasort

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

ArrayIterator::uasortSort with a user-defined comparison function and maintain index association

说明

public ArrayIterator::uasort(callable $callback): bool

This method sorts the elements such that indices maintain their correlation with the values they are associated with, using a user-defined comparison function.

注意:

如果两个成员完全相同,那么它们在排序数组中的相对顺序是未定义的。

参数

callback

在第一个参数小于,等于或大于第二个参数时,该比较函数必须相应地返回一个小于,等于或大于 0 的整数。

callback(mixed $a, mixed $b): int

返回值

Always returns true.

参见

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