FilesystemIterator::key

(PHP 5 >= 5.3.0, PHP 7)

FilesystemIterator::key — Retrieve the key for the current file

说明

public string FilesystemIterator::key ( void )

参数

此函数没有参数。

返回值

Returns the pathname or filename depending on the set flags. See the FilesystemIterator constants.

范例

Example #1 FilesystemIterator::key() example

This example will list the contents of the directory containing the script.


<?php
$iterator = new FilesystemIterator(dirname(__FILE__), FilesystemIterator::KEY_AS_FILENAME);
foreach ($iterator as $fileinfo) {
    echo $iterator->key() . "\n";
}
?>

以上例程的输出类似于：

apple.jpg
banana.jpg
example.php

参见

FilesystemIterator constants
DirectoryIterator::key() - Return the key for the current DirectoryIterator item
DirectoryIterator::getFilename() - Return file name of current DirectoryIterator item.
DirectoryIterator::getPathname() - Return path and file name of current DirectoryIterator item