Fixed compatibility w/ ancient PHP versions

diff --git a/wcfsetup/install.php b/wcfsetup/install.php
index 827262db6d363e6034c225dd96e6692c1fd26c5e..fe52785f7fa9cac7bfadc98414f0d8446751928f 100644 (file)
--- 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'];