LimitIterator::valid
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
LimitIterator::valid — Check whether the current element is valid
说明
public LimitIterator::valid(): bool
Checks whether the current element is valid.
参数
此函数没有参数。
返回值
成功时返回 true， 或者在失败时返回 false。
参见
- LimitIterator::current() - Get current element
- LimitIterator::key() - Get current key
- LimitIterator::rewind() - Rewind the iterator to the specified starting offset
- LimitIterator::next() - Move the iterator forward
- LimitIterator::seek() - Seek to the given position
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