PHP将数组添加到特定元素的数组中
我试图将两个数组合并为多维数组上的单个数组，其中给定的键值=一个值 第一个数组如下所示：PHP将数组添加到特定元素的数组中,php,multidimensional-array,array-merge,Php,Multidimensional Array,Array Merge,我试图将两个数组合并为多维数组上的单个数组，其中给定的键值=一个值 第一个数组如下所示： Array ( [0] => Array ( [id] => 4 [subcategories] => Array ( [0] => Array ( [id] => 5
Array
(
[0] => Array
(
[id] => 4
[subcategories] => Array
(
[0] => Array
(
[id] => 5
[category_order] => 0
[parent_id] => 4
[name] => Audio Equipment
)
[1] => Array
(
[id] => 6
[category_order] => 0
[parent_id] => 4
[name] => Home Entertainment
)
[2] => Array
(
[id] => 7
[category_order] => 0
[parent_id] => 4
[name] => Photography
)
[3] => Array
(
[id] => 8
[category_order] => 0
[parent_id] => 4
[name] => Portable Audio
)
[4] => Array
(
[id] => 9
[category_order] => 0
[parent_id] => 4
[name] => Televisions
)
)
)
)
Array
(
[0] => Array
(
[id] => 10
[parent_id] => 5
[name] => Amplifiers & Receivers
)
[1] => Array
(
[id] => 11
[parent_id] => 5
[name] => Audio Systems
)
[2] => Array
(
[id] => 12
[parent_id] => 5
[name] => Cassette Decks
)
[3] => Array
(
[id] => 13
[parent_id] => 5
[name] => CD Players
)
[4] => Array
(
[id] => 14
[parent_id] => 5
[name] => Radios
)
[5] => Array
(
[id] => 15
[parent_id] => 5
[name] => HiFi Speakers
)
)
array
(
[0]=> Array
(
[id] => 4
[subcategories] => Array
(
[0] => Array
(
[id] => 5
[category_order] => 0
[parent_id] => 4
[name] => Audio Equipment
[subsubcategories] = array
(
[id] => 10
[parent_id] => 5
[name] => Amplifiers & Receivers
)
)
Array
(
[0] => Array
(
[id] => 4
[subcategories] => Array
(
[0] => Array
(
[id] => 5
[category_order] => 0
[parent_id] => 4
[name] => Audio Equipment
)
[1] => Array
(
[id] => 6
[category_order] => 0
[parent_id] => 4
[name] => Home Entertainment
)
[2] => Array
(
[id] => 7
[category_order] => 0
[parent_id] => 4
[name] => Photography
)
[3] => Array
(
[id] => 8
[category_order] => 0
[parent_id] => 4
[name] => Portable Audio
)
[4] => Array
(
[id] => 9
[category_order] => 0
[parent_id] => 4
[name] => Televisions
)
)
)
)
Array
(
[0] => Array
(
[id] => 10
[parent_id] => 5
[name] => Amplifiers & Receivers
)
[1] => Array
(
[id] => 11
[parent_id] => 5
[name] => Audio Systems
)
[2] => Array
(
[id] => 12
[parent_id] => 5
[name] => Cassette Decks
)
[3] => Array
(
[id] => 13
[parent_id] => 5
[name] => CD Players
)
[4] => Array
(
[id] => 14
[parent_id] => 5
[name] => Radios
)
[5] => Array
(
[id] => 15
[parent_id] => 5
[name] => HiFi Speakers
)
)
array
(
[0]=> Array
(
[id] => 4
[subcategories] => Array
(
[0] => Array
(
[id] => 5
[category_order] => 0
[parent_id] => 4
[name] => Audio Equipment
[subsubcategories] = array
(
[id] => 10
[parent_id] => 5
[name] => Amplifiers & Receivers
)
)
Array
(
[0] => Array
(
[id] => 4
[subcategories] => Array
(
[0] => Array
(
[id] => 5
[category_order] => 0
[parent_id] => 4
[name] => Audio Equipment
)
[1] => Array
(
[id] => 6
[category_order] => 0
[parent_id] => 4
[name] => Home Entertainment
)
[2] => Array
(
[id] => 7
[category_order] => 0
[parent_id] => 4
[name] => Photography
)
[3] => Array
(
[id] => 8
[category_order] => 0
[parent_id] => 4
[name] => Portable Audio
)
[4] => Array
(
[id] => 9
[category_order] => 0
[parent_id] => 4
[name] => Televisions
)
)
)
)
Array
(
[0] => Array
(
[id] => 10
[parent_id] => 5
[name] => Amplifiers & Receivers
)
[1] => Array
(
[id] => 11
[parent_id] => 5
[name] => Audio Systems
)
[2] => Array
(
[id] => 12
[parent_id] => 5
[name] => Cassette Decks
)
[3] => Array
(
[id] => 13
[parent_id] => 5
[name] => CD Players
)
[4] => Array
(
[id] => 14
[parent_id] => 5
[name] => Radios
)
[5] => Array
(
[id] => 15
[parent_id] => 5
[name] => HiFi Speakers
)
)
array
(
[0]=> Array
(
[id] => 4
[subcategories] => Array
(
[0] => Array
(
[id] => 5
[category_order] => 0
[parent_id] => 4
[name] => Audio Equipment
[subsubcategories] = array
(
[id] => 10
[parent_id] => 5
[name] => Amplifiers & Receivers
)
)
类似的方法应该可以工作，只需重命名数组名称，因为您没有提供它们。但是我认为你会得到这样的想法：）主要是你用foreach循环遍历所有的子类别，或者你会得到父id，可以用父id访问主数组，并将子类别信息保存在那里
foreach( $sub_array as $item ) {
$main_array[ category_id ][ $item[ 'parent_id' ] ][ 'subsubcategories' ] = $item;
}
您好，谢谢您的回复，这肯定只是将$sub_数组项分配给$main_数组位置，而不是父id？main_数组[category_id][0][subcategories]=array（）我认为需要某种嵌套循环和一个条件来确定子_数组父_id是否与主_数组category_id匹配？