diff --git a/connect_db.php b/connect_db.php
index c4480a4..b24967e 100644
--- a/connect_db.php
+++ b/connect_db.php
@@ -1,15 +1,17 @@
 <?php
-    $db_link = mysqli_connect('141.19.142.11', 'web_b-3', 'een7Ao6s', 'bibliothek_candle');
 
-    if(!$db_link){
-        die("<p>Verbindung nicht hergestellt</p>");
-    }else{
-        echo "Verbindung hergestellt!";
-    }
-
-    function runSQL($sql){
-        global $db_link;
-        $db_res = mysqli_query($db_link, $sql) or die("SQL_Abfrage: " . $sql . "Fehler: " . mysqli_error($db_link));
-        return $db_res;
-    }
+   $servername = "141.19.142.11";
+   $username = "web_b-3";
+   $password = "een7Ao6s";
+   $database = "bibliothek_candle";
+   
+   try {
+       $conn = new PDO("mysql:host=$servername;dbname=$database", $username, $password);
+       $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+       echo "Connected successfully";
+   } catch(PDOException $e) {
+       echo "Connection failed: " . $e->getMessage();
+   }
+   
+   
 ?>
\ No newline at end of file