PHP Manual
LimitIterator
Check whether the current element is valid

LimitIterator::valid

(PHP 5 >= 5.1.0, PHP 7)

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