<?php
$regions = array();
$regions[65] = array('id' => 65, 'parent_id' => 44, 'name' => "Shoreditch");
$regions[77] = array('id' => 77, 'parent_id' => 5, 'name' => "England");
$regions[100] = array('id' => 100, 'parent_id' => 0, 'name' => "Europe");
$regions[5] = array('id' => 5, 'parent_id' => 100, 'name' => "United Kingdom");
$regions[44] = array('id' => 44, 'parent_id' => 77, 'name' => "London");
$hierarchy = array();
function get_hierarchy($regions, $region_id = 0)
{
if (0 === $regions[$region_id]['parent_id'])
{
return $regions[$region_id]['name'];
}
else
{
get_hierarchy($regions, $regions[$region_id]['parent_id']);
}
return $regions[$region_id]['name'];
}
var_dump(get_hierarchy($regions, 44));
preferences:
59.12 ms | 402 KiB | 5 Q