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PHP - Manual: FilesystemIterator::key - 互联网笔记

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PHP官方手册 - 互联网笔记

PHP - Manual: FilesystemIterator::key

2025-05-18

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.

示例

示例 #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";
}
?>

上述示例在 PHP 8.2 中的输出类似于:

.
..
apple.jpg
banana.jpg
example.php

参见

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官方地址:https://www.php.net/manual/en/filesystemiterator.key.php

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