SplDoublyLinkedList::prev()函數是PHP中的內置函數,用於移至上一個條目。
用法:
void SplDoublyLinkedList::prev( void )
參數:該函數不接受任何參數。
返回值:它不返回任何值。
以下示例程序旨在說明PHP中的SplDoublyLinkedList::prev()函數:
示例1:
<?php
// Declare an empty SplDoublyLinkedList
$list = new \SplDoublyLinkedList;
// Use SplDoublyLinkedList::add() function to
// add elements to the SplDoublyLinkedList
$list->add(0, 30);
$list->add(1, 20);
$list->add(2, 30);
$list->add(3, "Geeks");
$list->add(4, 'G');
// Use SplDoublyLinkedList::prev() function
// to move to previous entry
$list->prev();
// Display doubly linked list
print_r($list);
?>
輸出:
SplDoublyLinkedList Object ( [flags:SplDoublyLinkedList:private] => 0 [dllist:SplDoublyLinkedList:private] => Array ( [0] => 30 [1] => 20 [2] => 30 [3] => Geeks [4] => G ) )
示例2:
<?php
// Declare an empty SplDoublyLinkedList
$list = new \SplDoublyLinkedList();
// Use SplDoublyLinkedList::push() function to
// add elements to the SplDoublyLinkedList
$list->push(1);
$list->push(2);
$list->push(3);
$list->push(8);
$list->push(5);
// Use SplDoublyLinkedList::prev() function
// to move to previous entry
$list->prev();
// Display doubly linked list
var_dump($list);
?>
輸出:
object(SplDoublyLinkedList)#1 (2) { ["flags":"SplDoublyLinkedList":private]=> int(0) ["dllist":"SplDoublyLinkedList":private]=> array(5) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(8) [4]=> int(5) } }
參考: https://www.php.net/manual/en/spldoublylinkedlist.prev.php
相關用法
- PHP prev()用法及代碼示例
- PHP SplDoublyLinkedList next()用法及代碼示例
- PHP SplDoublyLinkedList add()用法及代碼示例
- PHP SplDoublyLinkedList key()用法及代碼示例
- PHP SplDoublyLinkedList pop()用法及代碼示例
- PHP SplDoublyLinkedList top()用法及代碼示例
- PHP SplDoublyLinkedList unshift()用法及代碼示例
- PHP SplDoublyLinkedList setIteratorMode()用法及代碼示例
- PHP SplDoublyLinkedList unserialize()用法及代碼示例
- PHP SplDoublyLinkedList serialize()用法及代碼示例
- PHP SplDoublyLinkedList __construct()用法及代碼示例
- PHP SplDoublyLinkedList getIteratorMode()用法及代碼示例
- PHP SplDoublyLinkedList valid()用法及代碼示例
- PHP SplDoublyLinkedList offsetGet()用法及代碼示例
- PHP SplDoublyLinkedList bottom()用法及代碼示例
注:本文由純淨天空篩選整理自jit_t大神的英文原創作品 PHP | SplDoublyLinkedList prev() Function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。