mysqli

Read Folders

$dir = opendir($path);
while($folder = readdir($dir)){
	if(!is_dir($folder)){
		echo $folder;
	}
}
closedir($dir);

Read Files

$dir = opendir($path);
while($file = readdir($dir)){
	if(!is_dir($file)){
		echo $file;
	}
}
closedir($dir);

Get Extension File

$ext = pathinfo($file, PATHINFO_EXTENSION);

Read Image to Base64

base64_encode(file_get_contents($path));