3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $menu = array( array(1,3,'Wurm 1.1', 2, 10), array(2,6,'Vogel 2.1', 2, 30), array(3,0,'Tiger 1', 1, 10), array(4,6,'Hund 2.2', 2, 40), array(5,3,'Katze 1.2', 2, 11), array(6,0,'Pferd 2', 1, 20), array(7,1,'Baer 1.1.1', 3, 0), array(8,3,'Schwein 1.3', 2, 12), array(9,4,'Esel 2.2.1', 3, 0), ); // Algorithmus hier /* steps: 1. sort items by levelId and sortId - finished 2. get max levelId value 'x' = iterations - ...that seems to be not the way to go. better way would be recursion for each element and search for children belonging to the current menuId.... 3. ... */ $result = array(); foreach ($menu as $key => $row){ $levelId[$key] = $row[3]; $sortId[$key] = $row[4]; } array_multisort($levelId, SORT_DESC, $sortId, SORT_DESC, $menu); $levels = $menu[0][3]; echo count($menu) . " items\n"; echo $levels . " levels\n"; function getChild($list){ foreach ($list as $entry){ if ($entry[1] == $list[0]){ array_push($entry, $target); } } } getChild($menu[8]); var_dump($result); $target = array( array(3,0,'Tiger 1', 1, 10), array(1,3,'Wurm 1.1', 2, 10), array(7,1,'Baer 1.1.1', 3, 0), array(5,3,'Katze 1.2', 2, 11), array(8,3,'Schwein 1.3', 2, 12), array(6,0,'Pferd 2', 1, 20), array(2,6,'Vogel 2.1', 2, 30), array(4,6,'Hund 2.2', 2, 40), array(9,4,'Esel 2.2.1', 3, 0), ); //var_dump($result == $target); //var_dump($result);
based on XlFsD
Output for 5.6.0 - 7.3.0alpha1
9 items 3 levels array(0) { }