CachingIterator::offsetExists

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

CachingIterator::offsetExistsThe offsetExists purpose

说明

public CachingIterator::offsetExists(string $key): bool
警告

本函数还未编写文档,仅有参数列表。

参数

key

The index being checked.

返回值

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

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