仅在PHP中保留数组的前N个元素? [英] Only keep the first N elements of an array in PHP?

问题描述

有没有一种方法只能保留数组的前N个(例如10个)元素?我知道有array_pop，但是有没有更好，更优雅的方式?

Is there a way to only keep the first N (for example 10) elements of an array? I know there is array_pop, but is there a better, more elegant way?

推荐答案

您可以使用 array_slice 或 array_splice :

You can use array_slice or array_splice:

$b = array_slice($a, 0, 10);
$c = array_splice($a, 0, 10);

请注意，array_slice复制$a的项目并返回它们，而array_splice会修改$a本身，并且仅返回已从$a中删除的项目.

Note that array_slice copies the items of $a and returns them while array_splice does modify $a itself and only returns the items that have been removed from $a.

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