From 06538f5fd51ac20d780d39f18a294136046ad22b Mon Sep 17 00:00:00 2001
From: Tatiana Glushchenko <tatianaglushchenko@catalyst.net.nz>
Date: Mon, 13 Oct 2025 20:40:51 +1300
Subject: [PATCH] mod_customcert: Fix deprecated utf8_encode()

This function has been deprecated as of PHP 8.2.0.
---
 tests/email_certificate_task_test.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tests/email_certificate_task_test.php b/tests/email_certificate_task_test.php
index cfa56c9f5..5a305e6ea 100644
--- a/tests/email_certificate_task_test.php
+++ b/tests/email_certificate_task_test.php
@@ -150,11 +150,11 @@ public function test_email_certificates_teachers() {
         // Confirm that we only sent out 2 emails, both emails to the teacher for the two students.
         $this->assertCount(2, $emails);
 
-        $this->assertStringContainsString(fullname($user3), utf8_encode($emails[0]->header));
+        $this->assertStringContainsString(fullname($user3), mb_convert_encoding($emails[0]->header, 'UTF-8', 'ISO-8859-1'));
         $this->assertEquals($CFG->noreplyaddress, $emails[0]->from);
         $this->assertEquals($user3->email, $emails[0]->to);
 
-        $this->assertStringContainsString(fullname($user3), utf8_encode($emails[1]->header));
+        $this->assertStringContainsString(fullname($user3), mb_convert_encoding($emails[1]->header, 'UTF-8', 'ISO-8859-1'));
         $this->assertEquals($CFG->noreplyaddress, $emails[1]->from);
         $this->assertEquals($user3->email, $emails[1]->to);
     }
@@ -189,11 +189,11 @@ public function test_email_certificates_others() {
         // Confirm that we only sent out 2 emails, both emails to the other address that was valid for the two students.
         $this->assertCount(2, $emails);
 
-        $this->assertStringContainsString(fullname(get_admin()), utf8_encode($emails[0]->header));
+        $this->assertStringContainsString(fullname(get_admin()), mb_convert_encoding($emails[0]->header, 'UTF-8', 'ISO-8859-1'));
         $this->assertEquals($CFG->noreplyaddress, $emails[0]->from);
         $this->assertEquals('testcustomcert@example.com', $emails[0]->to);
 
-        $this->assertStringContainsString(fullname(get_admin()), utf8_encode($emails[1]->header));
+        $this->assertStringContainsString(fullname(get_admin()), mb_convert_encoding($emails[1]->header, 'UTF-8', 'ISO-8859-1'));
         $this->assertEquals($CFG->noreplyaddress, $emails[1]->from);
         $this->assertEquals('testcustomcert@example.com', $emails[1]->to);
     }