Add maxlength and approximate argument to xadd

Author: alexander-schranz

src/Redis.php

@@ -3349,14 +3349,18 @@ public function xAck($stream, $group, $arr_messages) {}
      * @param   string  $str_key
      * @param   string  $str_id
      * @param   array   $arr_message
+     * @param   int     $i_maxlen
+     * @param   bool    $boo_approximate
      * @return  string  The added message ID.
      * @link    https://redis.io/commands/xadd
      * @example
      * <pre>
      * $obj_redis->xAdd('mystream', "*", ['field' => 'value']);
+     * $obj_redis->xAdd('mystream', "*", ['field' => 'value'], 10);
+     * $obj_redis->xAdd('mystream', "*", ['field' => 'value'], 10, true);
      * </pre>
      */
-    public function xAdd($str_key, $str_id, $arr_message) {}
+    public function xAdd($str_key, $str_id, $arr_message, $i_maxlen = 0, $boo_approximate = false) {}
 
     /**
      * Claim ownership of one or more pending messages.