php 如何根据键删除数组元素？

How to delete an array element based on key?

提问by Bruce Dou

Possible Duplicate:
How to delete an element from an array in php?

可能的重复：
如何从 php 中的数组中删除一个元素？

For instance,

例如，

Array(      
    [0] => Array
        (
            [0] => hello
            [1] => open
        )

    [1] => Array
        (
            [0] => good
            [1] => center
        )

    [2] => Array
        (
            [0] => hello
            [1] => close
        )
)

I want to delete the element which key is 1, after the operation:

我想在操作后删除 key 为1的元素：

Array(
    [0] => Array
        (
            [0] => hello
            [1] => open
        )

    [2] => Array
        (
            [0] => hello
            [1] => close
        )
)

回答by David Kurid?a

PHP

PHP

unset($array[1]);

回答by cletus

You don't say what language you're using, but looking at that output, it looks like PHP output (from print_r()).
If so, just use unset():

您没有说明您使用的是哪种语言，但查看该输出，它看起来像 PHP 输出（来自print_r()）。
如果是这样，只需使用unset()：

unset($arr[1]);

回答by mauris

this looks like PHP to me. I'll delete if it's some other language.

这对我来说就像 PHP。如果是其他语言，我会删除。

Simply unset($arr[1]);

简单地 unset($arr[1]);