Single column delete view, test for mbstring extension

public/css/tkr.css

@@ -77,6 +77,16 @@ fieldset.emoji-group {
     gap: 0.3em;
 }
 
+.delete-emoji-fieldset .fieldset-items {
+    display: block;
+    grid-template-columns: none;
+}
+
+.delete-emoji-fieldset button {
+    margin-top: 16px;
+    width: auto;
+}
+
 input[type="text"], 
 input[type="number"], 
 input[type="password"], 

src/Controller/MoodController/MoodController.php

@@ -50,12 +50,15 @@
 
         public function handleAdd(string $emoji, ?string $description=null): void {
             // Validate 1 visible character in the emoji
-            $charCount = mb_strlen($emoji, 'UTF-8');
-            if ($charCount !== 1) {
-                // TODO - handle error
-                return;
+            if (extension_loaded('mbstring')) {
+                // TODO - log a warning if mbstring isn't loaded
+                $charCount = mb_strlen($emoji, 'UTF-8');
+                if ($charCount !== 1) {
+                    // TODO - handle error
+                    return;
+                }
             }
-    
+
             // Validate the emoji is actually an emoji
             $emojiPattern = '/^[\x{1F000}-\x{1F9FF}\x{2600}-\x{26FF}\x{2700}-\x{27BF}\x{1F600}-\x{1F64F}\x{1F300}-\x{1F5FF}\x{1F680}-\x{1F6FF}\x{1F1E0}-\x{1F1FF}\x{1F900}-\x{1F9FF}\x{1FA70}-\x{1FAFF}]$/u';
     

templates/partials/emoji.php

@@ -24,7 +24,7 @@
 <?php if (!empty($emojiList)): ?>
             <form action="<?= $config->basePath ?>admin/emoji" method="post" enctype="multipart/form-data">
                 <input type="hidden" name="csrf_token" value="<?= htmlspecialchars($_SESSION['csrf_token']) ?>">
-                <fieldset>
+                <fieldset class="delete-emoji-fieldset">
                     <legend>Delete Emoji</legend>
                     <div class="fieldset-items">
                         <?php foreach ($emojiList as $emojiItem): ?>