DirectoryIterator
PHP Manual

DirectoryIterator::getExtension

Gets the file extension

Description

public string DirectoryIterator::getExtension()

Retrieves the file extension.

Parameters

This function has no parameters.

Return Values

Returns a string containing the file extension, or an empty string if the file has no extension.

Examples

Example #1 DirectoryIterator::getExtension example

<?php

$directory = new DirectoryIterator(__DIR__);
foreach ($directory as $fileinfo) {
    if ($fileinfo->isFile()) {
        echo $fileinfo->getExtension() . "\n";
    }
}

?>

The above example will output something similar to:

php
txt
jpg
gz

Notes

Note:

Another way of getting the extension is to use the pathinfo function. 

<?php
$extension = pathinfo($fileinfo->getFilename(), PATHINFO_EXTENSION);
?>

See Also

  • DirectoryIterator::getFilename
  • DirectoryIterator::getBasename
  • pathinfo