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APCUIterator::getTotalSize	APCUIterator::next

APCUIterator	Last updated: Mon, 26 Oct 2026

APCUIterator::key

(PECL apcu >= 5.0.0)

APCUIterator::key — Get iterator key

Description

public function APCUIterator::key(): string

Gets the current iterator key.

Parameters

This function has no parameters.

Return Values

Returns the key on success, or false upon failure.

See Also

APCUIterator::current() - Get current item
Iterator::key() - Return the key of the current element

APCUIterator::getTotalSize	APCUIterator::next

APCUIterator	Last updated: Mon, 26 Oct 2026