From 56d21334d73dd540332d4f7266cc42aa1b61fd2a Mon Sep 17 00:00:00 2001
From: atymic <atymicq@gmail.com>
Date: Sun, 1 Dec 2019 11:11:19 +1100
Subject: [PATCH] fix: fix array to string on passing DM object

---
 tmhOAuth.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tmhOAuth.php b/tmhOAuth.php
index e389331..cad6989 100644
--- a/tmhOAuth.php
+++ b/tmhOAuth.php
@@ -358,8 +358,10 @@ private function prepare_params() {
     foreach ($params as $k => $v) {
       $k = $this->request_settings['multipart'] ? $k : $this->safe_encode($k);
 
-      if (is_array($v))
-        $v = implode(',', $v);
+      if (is_array($v)) {
+        $containsOnlyStrings = count(array_filter($v, 'is_string')) === count($v);
+        $v = $containsOnlyStrings ? implode(',', $v) : $v;
+      }
 
       // we don't need to do the multipart escaping if we support curlfile
       if ($supports_curl_file && ($v instanceof CurlFile)) {