DirectoryIterator::rewind()
(PHP 5,PHP 7)
Rewind the DirectoryIterator back to the start
说明
public DirectoryIterator::rewind(void) : void
Rewind theDirectoryIteratorback to the start.
参数
此函数没有参数。
返回值
没有返回值。
范例
Example#1DirectoryIterator::rewind()example
<?php $iterator = new DirectoryIterator(dirname(__FILE__)); $iterator->next(); echo $iterator->key(); //1 $iterator->rewind(); //rewinding to the beginning echo $iterator->key(); //0 ?>
参见
- DirectoryIterator::current() Return the current DirectoryIterator item
- DirectoryIterator::key() Return the key for the current DirectoryIterator item
- DirectoryIterator::next() Move forward to next DirectoryIterator item
- DirectoryIterator::valid() Check whether current DirectoryIterator position is a valid file
- Iterator::rewind() 返回到迭代器的第一个元素