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(PHP 5)
DirectoryIterator::key — Return the key for the current DirectoryIterator item
Get the key for the current DirectoryIterator item.
此函数没有参数。
The key for the current DirectoryIterator item.
Example #1 A DirectoryIterator::key() example
<?php
$dir = new DirectoryIterator ( dirname ( __FILE__ ));
foreach ( $dir as $fileinfo ) {
if (! $fileinfo -> isDot ()) {
echo $fileinfo -> key () . " => " . $fileinfo -> getFilename () . "\n" ;
}
}
?>
以上例程的输出类似于:
0 => apple.jpg 1 => banana.jpg 2 => index.php 3 => pear.jpg