The PHP dir() function returns an instance of the Directory class and is used to read a directory.

• The given directory is opened
• The two properties handle and path of dir() are available
• Both handle and path properties have three methods: read(), rewind(), and close()

<?php
$d = dir(getcwd());

echo 'Handle: ' . $d->handle . '<br>';
echo 'Path: ' . $d->path . '<br>';

while (($file = $d->read()) !== false){
    echo 'filename: ' . $file . '<br>';
}

$d->close();
?>

Handle: Resource id #2
Path: /etc/php
filename: .
filename: ..
filename: image1.jpg
filename: image2.jpg
filename: logo.png

dir(directory, context)