Unzip a file outside web root (upper folder)

unzip.php

<?php
$unzip = new ZipArchive;
$out = $unzip->open('file-name.zip');
if ($out === TRUE) {
  $unzip->extractTo(realpath(getcwd() . '/../'));
  $unzip->close();
  echo 'File unzipped to '.realpath(getcwd() . '/../');
	} else {
	  echo 'Something went wrong?';
	}
?>