diff --git a/phpBB/includes/functions_compress.php b/phpBB/includes/functions_compress.php
index 8e07e6d1b8..4675394633 100644
--- a/phpBB/includes/functions_compress.php
+++ b/phpBB/includes/functions_compress.php
@@ -159,8 +159,10 @@ class compress
 
 	/**
 	* Return available methods
+	*
+	* @return array Array of strings of available compression methods (.tar, .tar.gz, .zip, etc.)
 	*/
-	function methods()
+	public static function methods()
 	{
 		$methods = array('.tar');
 		$available_methods = array('.tar.gz' => 'zlib', '.tar.bz2' => 'bz2', '.zip' => 'zlib');
diff --git a/phpBB/includes/functions_display.php b/phpBB/includes/functions_display.php
index 881c95907b..8328b9ee7a 100644
--- a/phpBB/includes/functions_display.php
+++ b/phpBB/includes/functions_display.php
@@ -1410,7 +1410,8 @@ function phpbb_gen_download_links($param_key, $param_val, $phpbb_root_path, $php
 
 	foreach ($methods as $method)
 	{
-		$type = array_pop(explode('.', $method));
+		$exploded = explode('.', $method);
+		$type = array_pop($exploded);
 		$params = array('archive' => $method);
 		$params[$param_key] = $param_val;