diff --git a/Torrent.php b/Torrent.php
index 296c82b..007352c 100644
--- a/Torrent.php
+++ b/Torrent.php
@@ -753,7 +753,7 @@ protected static function set_error($exception, $message = false)
      */
     protected static function announce_list($announce, $merge = [])
     {
-        return array_map(create_function('$a', 'return (array) $a;'), array_merge((array) $announce, (array) $merge));
+        return array_map(function($a) {return (array) $a;}, array_merge((array) $announce, (array) $merge));
     }
 
     /** Get the first announce url in a list
@@ -886,7 +886,9 @@ private function file($file, $piece_length)
     private function files($files, $piece_length)
     {
         sort($files);
-        usort($files, create_function('$a,$b', 'return strrpos($a,DIRECTORY_SEPARATOR)-strrpos($b,DIRECTORY_SEPARATOR);'));
+        usort($files, function($a, $b) {
+            return strrpos($a,DIRECTORY_SEPARATOR)-strrpos($b,DIRECTORY_SEPARATOR);
+        });
         $first = current($files);
         if (!self::is_url($first)) {
             $files = array_map('realpath', $files);