AppendIterator::valid()
(PHP 5>=5.1.0,PHP 7)
Checks validity of the current element
说明
public AppendIterator::valid(void) : bool
Checks validity of the current element.
参数
此函数没有参数。
返回值
ReturnsTRUE
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