harden code

src/Service/FormatText.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Service;
+
+class FormatText
+{
+    function slugify(string $text): string
+    {
+        $text = mb_strtolower($text, 'UTF-8');
+
+        // Umlaute ersetzen
+        $replacements = [
+            'ä' => 'ae',
+            'ö' => 'oe',
+            'ü' => 'ue',
+            'ß' => 'ss'
+        ];
+        $text = str_replace(array_keys($replacements), $replacements, $text);
+
+        // Nicht erlaubte Zeichen entfernen
+        $text = preg_replace('/[^a-z0-9\s.-]/', '', $text);
+
+        // Leerzeichen zu Bindestrichen
+        $text = preg_replace('/[\s-]+/', '-', $text);
+
+        $text = preg_replace('/\./', '-', $text);
+
+        return trim($text, '-');
+    }
+}