CachingIterator::offsetExists

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

CachingIterator::offsetExists — The offsetExists purpose

Description

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

This function is currently not documented; only its argument list is available.

Parameters

key

The index being checked.

Return Values

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