From 0f0f136dd2481cef76c1365458c866533d89f868 Mon Sep 17 00:00:00 2001
From: Nick Sagona <nick@nolainteractive.com>
Date: Mon, 19 Dec 2022 16:45:27 -0600
Subject: [PATCH] Patch for v8 str func issues

---
 src/Transport/Smtp/AuthHandler.php    | 6 +++---
 src/Transport/Smtp/EsmtpTransport.php | 4 ++--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/Transport/Smtp/AuthHandler.php b/src/Transport/Smtp/AuthHandler.php
index 072c9f9..aceb43f 100644
--- a/src/Transport/Smtp/AuthHandler.php
+++ b/src/Transport/Smtp/AuthHandler.php
@@ -175,7 +175,7 @@ public function afterEhlo(AgentInterface $agent)
         if ($this->username) {
             $count = 0;
             foreach ($this->getAuthenticatorsForAgent() as $authenticator) {
-                if (in_array(strtolower($authenticator->getAuthKeyword()),
+                if (in_array(strtolower((string)$authenticator->getAuthKeyword()),
                     array_map('strtolower', $this->esmtpParams))) {
                     ++$count;
                     if ($authenticator->authenticate($agent, $this->username, $this->password)) {
@@ -246,12 +246,12 @@ public function resetState()
      */
     protected function getAuthenticatorsForAgent()
     {
-        if (!$mode = strtolower($this->authMode)) {
+        if (!$mode = strtolower((string)$this->authMode)) {
             return $this->authenticators;
         }
 
         foreach ($this->authenticators as $authenticator) {
-            if (strtolower($authenticator->getAuthKeyword()) == $mode) {
+            if (strtolower((string)$authenticator->getAuthKeyword()) == $mode) {
                 return [$authenticator];
             }
         }
diff --git a/src/Transport/Smtp/EsmtpTransport.php b/src/Transport/Smtp/EsmtpTransport.php
index 8f5e310..b5454cb 100644
--- a/src/Transport/Smtp/EsmtpTransport.php
+++ b/src/Transport/Smtp/EsmtpTransport.php
@@ -152,7 +152,7 @@ public function getTimeout()
      */
     public function setEncryption($encryption)
     {
-        $encryption = strtolower($encryption);
+        $encryption = strtolower((string)$encryption);
         if ('tls' == $encryption) {
             $this->params['protocol'] = 'tcp';
             $this->params['tls'] = true;
@@ -289,7 +289,7 @@ public function __call($method, $args)
             if (method_exists($handler, $method)) {
                 $return = call_user_func_array([$handler, $method], $args);
                 // Allow fluid method calls
-                if (is_null($return) && substr(strtolower($method), 0, 3) == 'set') {
+                if (is_null($return) && substr(strtolower((string)$method), 0, 3) == 'set') {
                     return $this;
                 } else {
                     return $return;