1--TEST-- 2SPL: DoublyLinkedList: prev 3--FILE-- 4<?php 5$dll = new SplDoublyLinkedList(); 6$dll->push(1); 7$dll->push(2); 8$dll->push(3); 9$dll->push(4); 10 11 12$dll->rewind(); 13$dll->prev(); 14var_dump($dll->current()); 15$dll->rewind(); 16var_dump($dll->current()); 17$dll->next(); 18var_dump($dll->current()); 19$dll->next(); 20$dll->next(); 21var_dump($dll->current()); 22$dll->prev(); 23var_dump($dll->current()); 24 25?> 26--EXPECT-- 27NULL 28int(1) 29int(2) 30int(4) 31int(3) 32
