字符串到嵌套数组

Question

您好，我想问一下是否有什么好的方法可以从几个字符串中创建嵌套数组，例如示例，但是当我添加新字符串时，它应该追加

它看起来像某种树

字符串

TEXT1|||TEXT2|||TEXT3 ....

进入

[TEXT1 => [TEXT2 => [TEXT3]]]

新字符串

TEXT1|||AAA222|||AAA333

新数组与旧数组

[TEXT1 => [TEXT2 => [TEXT3 => null]，AAA222 => [AAA333 => null]]]

从这个数组生成字符串索引是“树”中的级别

array (size=5)
0 => 
array (size=2)
  'a' => string 'Motoryzacja' (length=11)
  'b' => string '' (length=0)
1 => 
array (size=2)
  'a' => string 'Części samochodowe' (length=20)
  'b' => string '' (length=0)
2 => 
array (size=2)
  'a' => string 'Części karoserii' (length=18)
  'b' => string '' (length=0)
3 => 
array (size=2)
  'a' => string 'Błotniki' (length=9)
  'b' => string '' (length=0)
4 => 
array (size=2)
  'a' => string 'Maski' (length=5)
  'b' => string '' (length=0)

Answer 1

这是我想出的：

//recursive function to build the array
function buildArray(Array $input, $output=[]){
  $len = count($input);
  if ($len > 0){
    $key = array_shift($input);
    //if there is more in the array, then we need to continue building our array
    if (($len - 1) > 0){
      $output[$key] = buildArray($input,$output);
    }
    else {
      $output[$key] = NULL;
    }
  }
  return $output;
}
//converts string input with ||| delimiter into nested Array
function stringToArray(String $input){
  $arr = explode('|||', $input);
  $output = buildArray($arr);
  return $output;
}

$arr = stringToArray("TEXT1|||TEXT2|||TEXT3");
$arr2 = stringToArray("TEXT1|||AAA222|||AAA333");
var_dump(array_merge_recursive($arr,$arr2));