FilesystemIterator::key()

(PHP 5>=5.3.0,PHP 7)

Retrieve the key for the current file

说明

publicFilesystemIterator::key(void) : string

参数

此函数没有参数。

返回值

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

范例

Example#1FilesystemIterator::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