PHP Manual
CachingIterator
Check whether the inner iterator has a valid next element

CachingIterator::hasNext

(PHP 5, PHP 7, PHP 8)

CachingIterator::hasNext — Check whether the inner iterator has a valid next element

说明

public CachingIterator::hasNext(): bool

警告

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参数

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返回�?/h3>
成功时返�?`true`�?或者在失败时返�?`false`?

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