Php/docs/cachingiterator.offsetexists

• PHP Manual
• CachingIterator
• The offsetExists purpose

CachingIterator::offsetExists

(PHP 5 >= 5.2.0, PHP 7)

CachingIterator::offsetExists — The offsetExists purpose

说明

public CachingIterator::offsetExists ( mixed $index ) : void

Warning 本函数还未编写文档，仅有参数列表。

参数

index

The index being checked.

返回值

Returns true if an entry referenced by the offset exists, false otherwise.