构造无限层级树形菜单
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<?php /** * Created by PhpStorm. * User: liupf * Date: 18-8-30 * Time: 下午11:44 */ function arrayConvertToTree ($array, $rootId) { $group = []; $map = []; foreach ($array as $val) { $group[$val[‘parent_id‘]][] = $val; $map[$val[‘id‘]] = [ $val[‘parent_id‘], count($group[$val[‘parent_id‘]]) - 1 ]; } foreach ($group as $key => &$val) { if (!empty($map[$key])) { $pos = $map[$key]; $group[$pos[0]][$pos[1]][‘children‘] = &$val; } } return $group[$rootId]; } $raw_data = [ [ ‘id‘ => 1, ‘parent_id‘ => 0, ‘value‘ => 1, ‘children‘ => [] ], [ ‘id‘ => 2, ‘parent_id‘ => 1, ‘value‘ => 2, ‘children‘ => [] ], [ ‘id‘ => 3, ‘parent_id‘ => 1, ‘value‘ => 3, ‘children‘ => [] ], [ ‘id‘ => 4, ‘parent_id‘ => 2, ‘value‘ => 4, ‘children‘ => [] ], [ ‘id‘ => 5, ‘parent_id‘ => 2, ‘value‘ => 5, ‘children‘ => [] ], [ ‘id‘ => 6, ‘parent_id‘ => 3, ‘value‘ => 6, ‘children‘ => [] ], [ ‘id‘ => 7, ‘parent_id‘ => 3, ‘value‘ => 7, ‘children‘ => [] ], [ ‘id‘ => 8, ‘parent_id‘ => 4, ‘value‘ => 8, ‘children‘ => [] ], [ ‘id‘ => 7, ‘parent_id‘ => 4, ‘value‘ => 7, ‘children‘ => [] ] ]; $tree = arrayConvertToTree($raw_data, 0); print_r($tree);
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