3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function page_walk($array, $parent_id = FALSE) { $organized_pages = array(); $children = array(); foreach($array as $index => $page) { if ( $page['parent_id'] == 0) // No, just spit it out and you're done { $organized_pages[$index] = $page; } else // If it does, { $organized_pages[$parent_id]['children'][$page['id']] = $this->page_walk($page, $parent_id); } } return $organized_pages; } function page_list($array) { $fakepages = array(); $fakepages[0] = array('id' => 1, 'parent_id' => 0, 'title' => 'Parent Page'); $fakepages[1] = array('id' => 2, 'parent_id' => 1, 'title' => 'Sub Page'); $fakepages[2] = array('id' => 3, 'parent_id' => 2, 'title' => 'Sub Sub Page'); $fakepages[3] = array('id' => 4, 'parent_id' => 3, 'title' => 'Another Parent Page'); $pages = $this->page_walk($fakepages, 0); print_r($pages); }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0