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Abgabe_Mohr/wsserver.php

@@ -80,6 +80,27 @@ class ChatServer implements MessageComponentInterface {
         $stmt->close();
         $db->close();
     }
+
+protected function countUnread($receiverId, $senderId) {
+    $db = new mysqli("localhost","root","","projekte");
+
+    $stmt = $db->prepare("
+        SELECT COUNT(*) 
+        FROM chat 
+        WHERE user_empfaenger = ? 
+        AND user_sender = ?
+        AND gelesen = 0
+    ");
+    $stmt->bind_param("ii", $receiverId, $senderId);
+    $stmt->execute();
+    $stmt->bind_result($count);
+    $stmt->fetch();
+
+    $stmt->close();
+    $db->close();
+    return $count;
+}
+
 }
 
 // Server starten