If Iterator::valid() returns false, the foreach() loop will be terminated.
Iterator::valid
(PHP 5 >= 5.0.0, PHP 7)
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.
인수
이 함수는 인수가 없습니다.
반환값
The return value will be casted to boolean and then evaluated.
성공 시 TRUE를, 실패 시 FALSE를 반환합니다.
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User Contributed Notes 2 notes
seva dot lapsha at gmail dot com ¶
14 years ago
Voitcus at gmail dot com ¶
11 years ago
If your class implements also ArrayAccess interface, you could use as valid() body
function valid(){
return $this->offsetExists($this->position);
}
