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  • DirectoryIterator::rewind()

    (PHP 5,PHP 7)

    Rewind the DirectoryIterator back to the start

    说明

    publicDirectoryIterator::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