PHP file to zip changed files (differences between working directory and staging area)

patch.php

#!/usr/bin/env php
<?php

exec("git diff --name-only --diff-filter=d", $out);
exec("git ls-files --others --exclude-standard", $out2);
if (count($out) > 0 || count($out2) > 0) {
	$zip = new ZipArchive();
	$zipName = "patch-" . date("YmdHi") . ".zip";
	if ($zip->open($zipName, ZipArchive::CREATE)) {
		foreach ($out as $line) {
			if (file_exists($line))
				$zip->addFile($line);
		}
		foreach ($out2 as $line) {
			if (file_exists($line))
				$zip->addFile($line);
		}
		$zip->close();
	}
	exit("New patch: $zipName");
} else {
	exit("No patch!");
}

Usage : php patch.php