Iterator::currentIterator::key
(PHP 5 >= 5.1.0)
Iterator::key — Return the key of the current element
설명
abstract public scalar Iterator::key
( void
)
Returns the key of the current element.
인수
이 함수는 인수가 없습니다.
반환값
Returns scalar on success, integer 0 on failure.
오류/예외
Issues E_WARNING on failure.
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