explode string key to multidimensional array php

   /**

     * This function will convert explode string key

     *  into multidimensional array with value

     *

     *  Example

     *  + ORIGINAL ARRAY

     *      $array = [

     *              "main;header;up" => "main_header_up value",

     *              "main;header;bottom" => "main_header_bottom value",

     *              "main;bottom" => "main_bottom value",

     *              "main;footer;right;top" => "main_footer_right_top value"

     *      ];

     *  + CONVERTED ARRAY

     *      $array = [

     *          "main" => [

     *                  "header" => [

     *                      "up" => "main_header_up value",

     *                      "bottom" => "main_header_bottom value"

     *              ],

     *                  "bottom" => ["main_bottom value"],

     *                  "footer" => [

     *                      "right" => [

     *                          "top" => "main_footer_right_top value

     *                  ]

     *              ]

     *          ]

     *      ];

     *

     *@param  $array - original array

     *

     *@return $result - destination array

     */

public function key2key($array)

{

     $result = [];

     foreach($array as $path => $value) {

         $temp =& $result;

         foreach(explode('.', $path) as $key) {

             $temp =& $temp[$key];

         }

         $temp = $value;

     }

     return $result;

}