From cdb48c59c0a73ab56116ebc23fdb7258cf004fc4 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Mon, 3 Jul 2017 16:57:48 +0200
Subject: [PATCH] Fixed compatibility w/ ancient PHP versions

---
 wcfsetup/install.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/wcfsetup/install.php b/wcfsetup/install.php
index 827262db6d..fe52785f7f 100644
--- a/wcfsetup/install.php
+++ b/wcfsetup/install.php
@@ -599,7 +599,12 @@ class Tar {
 				$longFilename = null;
 			}
 			if ($header['typeflag'] == 'L') {
-				$format = 'Z' . $header['size'] . 'filename';
+				if (version_compare(PHP_VERSION, '5.5.0-dev', '>=')) {
+					$format = 'Z' . $header['size'] . 'filename';
+				}
+				else {
+					$format = 'a' . $header['size'] . 'filename';
+				}
 				
 				$fileData = unpack($format, $this->file->read(512));
 				$longFilename = $fileData['filename'];
-- 
2.20.1