How to do recursion?

Question

PHP

Hello. I can’t figure out a bit with recursion, namely how to build it. There are properties (for example, number of rooms, type of housing, etc.) and there are their values. I need to collect references of these values ​​depending on the nesting of their properties.
For example (number of rooms -> housing type -> wall material):

1-roomatnie
1-room/vtorichka
1-room/vtorichka/kirpichnie
Maybe I created the table incorrectly, so I can't catch up.

1. n_category - number of the category to which the property belongs (apartments)
   
2. value_properties - property value
   
3. link - property link
   
4. name - name
   
5. n_prop - id - properties (number of rooms, type of housing, etc.)
   
6. priority - does not carry any information at the moment
   
7. parent - parent n_prop
   

This method turned out, I didn’t have the mind to finish ((

function get_data_dynamic_link($data,$parent=0){

    $tree = array();

    foreach ($data as $id=> $value) {    

        $tree[] = $value['link'];
        //$tree[] = $this->get_data_dynamic_link($data,$value['parent']);

    }

    return $tree;       
   }

Thanks for any advice.

Answer 1

Recursion is not needed to collect the url, just glue the array via implode with the separator / and get /cat/cat2/cat3 as the output, the order of the lines can be determined even when selecting through sort by parenr asc