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update : 2015.11.03
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Iterator::valid(PHP 5 >= 5.0.0) Iterator::valid — Checks if current position is valid 설명
abstract public boolean Iterator::valid
( void
)
This method is called after Iterator::rewind() and Iterator::next() to check if the current position is valid. 인수이 함수는 인수가 없습니다. 반환값
The return value will be casted to boolean and then evaluated.
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