Online PHP editor | refs for Vk5ZQ

<?php $arr = [ [ 'id' => 1, 'parent_id' => 0, 'access_type' => 'full-access', 'child' => [ [ 'id' => 4, 'parent_id' => 1, 'access_type' => '', ], [ 'id' => 5, 'parent_id' => 1, 'access_type' => '', ], ], ], [ 'id' => 2, 'parent_id' => 0, 'access_type' => 'read', 'child' => [ [ 'id' => 10, 'parent_id' => 2, 'access_type' => 'read-write', 'child' => [ [ 'id' => 11, 'parent_id' => 10, 'access_type' => '', ], [ 'id' => 12, 'parent_id' => 10, 'access_type' => 'read', ], ], ], [ 'id' => 7, 'parent_id' => 3, 'access_type' => 'read-write', ], ], ], [ 'id' => 3, 'parent_id' => 0, 'access_type' => 'full-access', 'child' => [ [ 'id' => 6, 'parent_id' => 3, 'access_type' => '', 'child' => [ [ 'id' => 8, 'parent_id' => 6, 'access_type' => '', ], [ 'id' => 9, 'parent_id' => 6, 'access_type' => '', ], ], ], [ 'id' => 18, 'parent_id' => 3, 'access_type' => '', ], ], ], [ 'id' => 13, 'parent_id' => 0, 'access_type' => '', 'child' => [ [ 'id' => 14, 'parent_id' => 13, 'access_type' => 'full-access', 'child' => [ [ 'id' => 15, 'parent_id' => 14, 'access_type' => '', ], [ 'id' => 16, 'parent_id' => 14, 'access_type' => '', ], ], ], [ 'id' => 17, 'parent_id' => 13, 'access_type' => '', ], ], ], ]; func_x($arr); function func_x($arr, $level = 0, $parent = '') { foreach($arr as $x) { if( empty ( $x['access_type'] ) && $parent == 'full-access' ) { $x['access_type'] = $parent; } echo str_repeat("---", $level) . " [" . $x['id'] . "] -> " . $x['access_type'] . "\n"; if(!empty($x['child'])) { func_x($x['child'], $level+1, $x['access_type']); } } }