Php/docs/class.arrayiterator

• PHP Manual
• 迭代器
• ArrayIterator 类

(PHP 5, PHP 7)

简介

这个迭代器允许在遍历数组和对象时删除和更新值与键。

当你想多次遍历相同数组时你需要实例化 ArrayObject，然后让这个实例创建一个 ArrayIteratror 实例。 当你想遍历相同数组时多次你需要实例 ArrayObject 并且让这个实例创建一个 ArrayIteratror 实例，然后使用foreach 或者 手动调用 getIterator() 方法。

类摘要

ArrayIterator implements ArrayAccess , SeekableIterator , Countable , Serializable {

/* 常量 */

const integer STD_PROP_LIST = 1

const integer ARRAY_AS_PROPS = 2

/* 方法 */

public append ( mixed $value ) : void

public asort ( ) : void

public __construct ([ mixed $array = array() [, int $flags = 0 ]] )

public count ( ) : int

public current ( ) : mixed

public getArrayCopy ( ) : array

public getFlags ( ) : int

public key ( ) : mixed

public ksort ( ) : void

public natcasesort ( ) : void

public natsort ( ) : void

public next ( ) : void

public offsetExists ( mixed $index ) : bool

public offsetGet ( mixed $index ) : mixed

public offsetSet ( mixed $index , mixed $newval ) : void

public offsetUnset ( mixed $index ) : void

public rewind ( ) : void

public seek ( int $position ) : void

public serialize ( ) : string

public setFlags ( string $flags ) : void

public uasort ( callable $cmp_function ) : void

public uksort ( callable $cmp_function ) : void

public unserialize ( string $serialized ) : void

public valid ( ) : bool

}

预定义常量

ArrayIterator 标记

ArrayIterator::STD_PROP_LIST

Properties of the object have their normal functionality when accessed as list (var_dump, foreach, etc.).

ArrayIterator::ARRAY_AS_PROPS

可以通过属性访问条目（读写都支持）。

Table of Contents

• ArrayIterator::append — Append an element
• ArrayIterator::asort — Sort array by values
• ArrayIterator::__construct — Construct an ArrayIterator
• ArrayIterator::count — Count elements
• ArrayIterator::current — Return current array entry
• ArrayIterator::getArrayCopy — Get array copy
• ArrayIterator::getFlags — Get behavior flags
• ArrayIterator::key — Return current array key
• ArrayIterator::ksort — Sort array by keys
• ArrayIterator::natcasesort — Sort an array naturally, case insensitive
• ArrayIterator::natsort — Sort an array naturally
• ArrayIterator::next — Move to next entry
• ArrayIterator::offsetExists — Check if offset exists
• ArrayIterator::offsetGet — Get value for an offset
• ArrayIterator::offsetSet — Set value for an offset
• ArrayIterator::offsetUnset — Unset value for an offset
• ArrayIterator::rewind — Rewind array back to the start
• ArrayIterator::seek — Seek to position
• ArrayIterator::serialize — Serialize
• ArrayIterator::setFlags — Set behaviour flags
• ArrayIterator::uasort — Sort with a user-defined comparison function and maintain index association
• ArrayIterator::uksort — Sort by keys using a user-defined comparison function
• ArrayIterator::unserialize — Unserialize
• ArrayIterator::valid — Check whether array contains more entries