php从数组中获取子数组
php从数组中获取子数组
提问于 2017-07-02 14:04:53
下面是一个数组，我想提取"category_input“作为子数组。这个子数组包含"cat_id“和"post-titles”。然后，我将想插入到WordPress DB下的每个类别的帖子。是。cat_20将有名为post-in-cat-20的帖子，依此类推。
Array
(
[post_type] => post
[post_status] => publish
[content_texarea] =>
[category_input] => Array
(
[0] => cat_20
[1] => post-in-cat-20
[2] => post-in-cat-20
[3] => post-in-cat-20
[4] => cat_19
[5] => post-in-cat-19
[6] => post-in-cat-19
[7] => post-in-cat-19
[8] => post-in-cat-19
[9] => cat_2
[10] => post-in-cat-2
[11] => post-in-cat-2
[12] => post-in-cat-2
)
)预期结果
提取的数组将为
[category_input] => Array
(
[0] => cat_20
[1] => post-in-cat-20
[2] => post-in-cat-20
[3] => post-in-cat-20
[4] => cat_19
[5] => post-in-cat-19
[6] => post-in-cat-19
[7] => post-in-cat-19
[8] => post-in-cat-19
[9] => cat_2
[10] => post-in-cat-2
[11] => post-in-cat-2
[12] => post-in-cat-2
)然后，我需要在wp查询中使用caegory和post数组。
[category_input] => Array
(
[cat_20] => Array
[1] => post-in-cat-20
[2] => post-in-cat-20
[3] => post-in-cat-20
[cat_19] => Array
[5] => post-in-cat-19
[6] => post-in-cat-19
[7] => post-in-cat-19
[8] => post-in-cat-19
[cat_2] => Array
[10] => post-in-cat-2
[11] => post-in-cat-2
[12] => post-in-cat-2
)Stack Overflow用户
发布于 2017-07-02 14:16:49
当您想要更新数组的一部分时，请看一下给定的部分。
由$main_arr[category_input];从主数组返回的数组
foreach($category_input as $val){
$part = explode('_', $val);
if(isset($part[0]) && $part[0] == 'cat'){
$out_arr[$val] = array();
$key = $val;
}else{
$out_arr[$key][] = $val;
}
}查看完整的示例：https://3v4l.org/JI9U7
现在，您可以将$out_arr再次放到$main_arr中。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/44867934
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