File Upload Validation in PHP

$errors = array();

if(isset($_FILES))
{
	foreach($_FILES as $file)
	{
		if($file['error'] == 0) 
		{
			$file_type = wp_check_filetype(basename($file['name']));
			$uploaded_file_type = $file_type['type'];
		
			$allowed_file_types = array('image/jpg','image/jpeg','image/png');
			
			if(! in_array($uploaded_file_type, $allowed_file_types)) 
			{		
				$errors[count($errors)] = __('Please upload JPEG or PNG file types only', TXT_DOMAIN);
				break;
			}
		} 
		else if($file['error'] == 1 || $file['error'] == 2)
		{
			$errors[count($errors)] = __('File sizes must be less than ...');
			break;
		}
		else if($file['error'] == 3)
		{
			$errors[count($errors)] = __('An uploaded file was only partially loaded');
			break;
		}
		else if($file['error'] == 6)
		{
		  $errors[count($errors)] = __('File upload is missing a temporary folder');
			break;
		}
	}
}