From 32bc2efdb5c3006e15ddf7dd93775da4cb9fbffd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20M=C3=BCller?= <ich@eskimue.de>
Date: Wed, 8 Apr 2026 09:02:58 +0200
Subject: [PATCH] fehler bei registrierung behoben

---
 public/register.php | 15 ++++++++++++---
 public/settings.php | 11 ++++++++++-
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/public/register.php b/public/register.php
index ed5649b..8d4781b 100644
--- a/public/register.php
+++ b/public/register.php
@@ -68,6 +68,15 @@ function sendRegistrationNotification(string $username, string $email, ?string $
     }
 }
 
+function textLength(string $value): int
+{
+    if (function_exists('mb_strlen')) {
+        return mb_strlen($value);
+    }
+
+    return strlen($value);
+}
+
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     $username       = trim($_POST['username'] ?? '');
     $email          = trim($_POST['email'] ?? '');
@@ -77,9 +86,9 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
 
     if ($username === '') {
         $errors[] = 'Bitte einen Benutzernamen eingeben.';
-    } elseif (mb_strlen($username) < 3) {
+    } elseif (textLength($username) < 3) {
         $errors[] = 'Der Benutzername muss mindestens 3 Zeichen lang sein.';
-    } elseif (mb_strlen($username) > 50) {
+    } elseif (textLength($username) > 50) {
         $errors[] = 'Der Benutzername darf maximal 50 Zeichen lang sein.';
     }
 
@@ -99,7 +108,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         $errors[] = 'Die Passwörter stimmen nicht überein.';
     }
 
-    if ($displayName !== '' && mb_strlen($displayName) > 100) {
+    if ($displayName !== '' && textLength($displayName) > 100) {
         $errors[] = 'Der Anzeigename darf maximal 100 Zeichen lang sein.';
     }
 
diff --git a/public/settings.php b/public/settings.php
index 3b73478..9aa5406 100644
--- a/public/settings.php
+++ b/public/settings.php
@@ -39,6 +39,15 @@ function h(?string $value): string
     return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
 }
 
+function textLength(string $value): int
+{
+    if (function_exists('mb_strlen')) {
+        return mb_strlen($value);
+    }
+
+    return strlen($value);
+}
+
 function generateTelegramLinkToken(int $length = 32): string
 {
     return bin2hex(random_bytes(max(16, (int) ceil($length / 2))));
@@ -83,7 +92,7 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             $errors[] = 'Bitte eine gültige E-Mail-Adresse eingeben.';
         }
 
-        if ($displayName !== '' && mb_strlen($displayName) > 100) {
+        if ($displayName !== '' && textLength($displayName) > 100) {
             $errors[] = 'Der Anzeigename darf maximal 100 Zeichen lang sein.';
         }