FilesystemIterator::key

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

FilesystemIterator::keyRetrieve the key for the current file

说明

public FilesystemIterator::key ( ) : string

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

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