From ca84a44f3d4b2840910b37c85698e775addef727 Mon Sep 17 00:00:00 2001
From: Angel Fernando Quiroz Campos <angelfqc.18@gmail.com>
Date: Fri, 11 Jun 2021 15:47:33 -0500
Subject: [PATCH] Fix deprecated access to string with curly braces

---
 plugin/ims_lti/vendor/oauth1/code/OAuthSignatureMethod.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/ims_lti/vendor/oauth1/code/OAuthSignatureMethod.php b/plugin/ims_lti/vendor/oauth1/code/OAuthSignatureMethod.php
index ea7adc16f7..7db0eaa551 100644
--- a/plugin/ims_lti/vendor/oauth1/code/OAuthSignatureMethod.php
+++ b/plugin/ims_lti/vendor/oauth1/code/OAuthSignatureMethod.php
@@ -46,7 +46,7 @@ abstract class OAuthSignatureMethod {
     // Avoid a timing leak with a (hopefully) time insensitive compare
     $result = 0;
     for ($i = 0; $i < strlen($signature); $i++) {
-      $result |= ord($built{$i}) ^ ord($signature{$i});
+      $result |= ord($built[$i]) ^ ord($signature[$i]);
     }
 
     return $result == 0;