文字
AppendIterator::valid
(PHP 5 >= 5.1.0)
AppendIterator::valid — Checks validity of the current element
说明
public bool AppendIterator::valid
( void
)
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