1--TEST-- 2DatePeriod by-ref iterator 3--FILE-- 4<?php 5$properties = [ 6 'start' => new \DateTimeImmutable("2023-01-13 12:29:30"), 'end' => new \DateTimeImmutable("2023-01-16 16:49:29"), 'current' => new \DateTimeImmutable("2023-01-15 00:00:00"), 7 'interval' => DateInterval::createFromDateString("tomorrow"), 'recurrences' => 1, 'include_start_date' => true, 'include_end_date' => true, 8]; 9 10$d = DatePeriod::__set_state( $properties ); 11try { 12 foreach( $d as &$item ) 13 { 14 echo $item->format(DateTime::ISO8601), "\n"; 15 } 16 echo "OK\n"; 17} catch (\Error $e) { 18 echo $e::class, ': ', $e->getMessage(), "\n"; 19} 20?> 21--EXPECT-- 22Error: An iterator cannot be used with foreach by reference 23