PHP8中文参考手册
AppendIterator
Checks validity of the current element

AppendIterator::valid

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

AppendIterator::valid — Checks validity of the current element

说明

public AppendIterator::valid ( ) : bool

Checks validity of the current element.

参数

此函数没有参数。

返回值

Returns true if the current iteration is valid, false otherwise.

参见

AppendIterator::current() - Gets the current value
AppendIterator::key() - Gets the current key
AppendIterator::next() - Moves to the next element
AppendIterator::rewind() - Rewinds the Iterator

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