PHP 一维数组转换为多维数组

数组转换为多维数组"/>

PHP 一维数组转换为多维数组

PHP 把一维数组转换为多维数组
PHP 把一维数组的键值转化为多维数组的键名

• 原始数组

$arr = ['aa','bb','cc','vv'];

• 结果数组

$data['aa']['bb']['cc']['vv'] = 999;

• ㊙️ 神秘算法 ㊙️

function tree ($arr,$result){$tree = [];$tmp = &$tree;foreach ($arr as $key) {$tmp[$key] = [];$tmp = &$tmp[$key];}$tmp = $result;return $tree;
}$data = [];
$arr = ['aa','bb','cc','vv'];
$data = array_merge_recursive($data,tree($arr,'999'));

• 返回结果

array(1) {["aa"]=>array(1) {["bb"]=>array(1) {["cc"]=>array(1) {["vv"]=>string(3) "999"}}}
}