IteratorIterator::key
(PHP 5 >= 5.1.0, PHP 7)
IteratorIterator::key — Get the key of the current element
설명
public scalar IteratorIterator::key
( void
)
Get the key of the current element.
인수
이 함수는 인수가 없습니다.
반환값
The key of the current element.
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