The CachingIterator class

(PHP 5, PHP 7)

简介

This object supports cached iteration over another iterator.

类摘要

CachingIterator extends IteratorIterator implements OuterIterator , ArrayAccess , Countable {
/* 常量 */
const int CALL_TOSTRING = 1 ;
const int CATCH_GET_CHILD = 16 ;
const int TOSTRING_USE_KEY = 2 ;
const int TOSTRING_USE_CURRENT = 4 ;
const int TOSTRING_USE_INNER = 8 ;
const int FULL_CACHE = 256 ;
/* 方法 */
public __construct ( Iterator $iterator [, int $flags = self::CALL_TOSTRING ] )
public count ( ) : int
public current ( ) : mixed
public getCache ( ) : array
public getFlags ( ) : int
public getInnerIterator ( ) : Iterator
public hasNext ( ) : void
public key ( ) : scalar
public next ( ) : void
public offsetExists ( mixed $index ) : void
public offsetGet ( string $index ) : void
public offsetSet ( mixed $index , mixed $newval ) : void
public offsetUnset ( string $index ) : void
public rewind ( ) : void
public setFlags ( int $flags ) : void
public __toString ( ) : void
public valid ( ) : void
}

预定义常量

CachingIterator::CALL_TOSTRING

Convert every element to string.

CachingIterator::CATCH_GET_CHILD

Don't throw exception in accessing children.

CachingIterator::TOSTRING_USE_KEY

Use key for conversion to string.

CachingIterator::TOSTRING_USE_CURRENT

Use current for conversion to string.

CachingIterator::TOSTRING_USE_INNER

Use inner for conversion to string.

CachingIterator::FULL_CACHE

Cache all read data.

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