PHP:使用 foreach 从多维数组中(按键)删除元素 [英] PHP: remove element from multidimensional array (by key) using foreach
本文介绍了PHP:使用 foreach 从多维数组中(按键)删除元素的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我得到了多维数组.从每个子数组中,我想删除/取消设置索引为 1 的值.我的数组 $data.
I got multidimensional array. From each subarray, I would like to remove / unset values with index 1. My array $data.
Array
(
[3463] => Array
(
[0] => 1
[1] => 2014
[context] => 'aaa'
)
[3563] => Array
(
[0] => 12
[1] => 2014
[context] => 'aaa'
)
[2421] => Array
(
[0] => 5
[1] => 2014
[context] => 'zzz'
)
)
我想从子数组中删除索引为1"的每个元素.期望的输出是:
I would like to remove every element with index '1' from subarrays. Desired output is:
Array
(
[3463] => Array
(
[0] => 1
[context] => 'aaa'
)
[3563] => Array
(
[0] => 12
[context] => 'aaa'
)
[2421] => Array
(
[0] => 5
[context] => 'zzz'
)
)
为什么这不起作用?
foreach ($data as $subArr) {
foreach ($subArr as $key => $value) {
if ($key == '1') {
unset($subArr[$key]);
}
}
}
如果这个问题对你们来说微不足道,我很抱歉.
I'm sorry if this problem is trivial for you guys.
推荐答案
简单的方法!?您只需使用一个 foreach 即可完成此操作!
easy way!? you can do this just with one foreach!
foreach ($data as $key => $subArr) {
unset($subArr['1']);
$data[$key] = $subArr;
}
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