(PHP 5 >= 5.2.2, PHP 7)
DirectoryIterator::getBasename — Get base name of current DirectoryIterator item
public DirectoryIterator::getBasename ([ string $suffix ] ) : string
Get the base name of the current DirectoryIterator item.
suffix
 If the base name ends in suffix, this will be cut. 
The base name of the current DirectoryIterator item.
Example #1 A DirectoryIterator::getBasename() example
 This example will list the full base name and the base name with suffix .jpg removed for the files in the directory containing the script. 
<?php
$dir = new DirectoryIterator(dirname(__FILE__));
foreach ($dir as $fileinfo) {
    if ($fileinfo->isFile()) {
        echo $fileinfo->getBasename() . "\n";
        echo $fileinfo->getBasename('.jpg') . "\n";
    }
}
?> The above example will output something similar to:
apple.jpg apple banana.jpg banana index.php index.php pear.jpg pear
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    https://www.php.net/manual/en/directoryiterator.getbasename.php