©
This document uses PHP Chinese website manual Release
(PHP 5 >= 5.3.6)
DirectoryIterator::getExtension — Gets the file extension
Retrieves the file extension.
此函数没有参数。
Returns a string containing the file extension, or an empty string if the file has no extension.
Example #1 DirectoryIterator::getExtension() example
<?php
$directory = new DirectoryIterator ( __DIR__ );
foreach ( $directory as $fileinfo ) {
if ( $fileinfo -> isFile ()) {
echo $fileinfo -> getExtension () . "\n" ;
}
}
?>
以上例程的输出类似于:
php txt jpg gz
Note:
This method is only available as of PHP 5.3.6. Another way of getting the extension is to use the pathinfo() function.
<?php
$extension = pathinfo ( $fileinfo -> getFilename (), PATHINFO_EXTENSION );
?>