edit

connection/koneksi.php

 <?php
-$database = new mysqli('127.0.0.1', 'root', '', 'cafe_db');
+$database = new mysqli('127.0.0.1', 'root', '', 'p1d3ti05_cafedb');
\ No newline at end of file

functions/fungsi.php

 <?php 
 global $conn;
         
-        $conn = mysqli_connect("localhost", "root", "");
+        $conn = mysqli_connect("localhost", "p1d3ti05", "Fredrick8");
         if(!$conn){
                 die("database connect problem");
         }
-        $db_use = mysqli_select_db($conn,"cafe_db") or die ("select db problem!!");
+        $db_use = mysqli_select_db($conn,"p1d3ti05_cafedb") or die ("select db problem!!");
         
         function execQ($strQ){
                 global $conn;
-                $res = mysql_query($strQ, $conn);
+                $res = mysqli_query( $conn, $strQ);
                 
                 return $res;
         }
@@ -62,9 +62,9 @@ global $conn;
   
       $resItem = execQ($strQ);
 	
-    if(mysql_num_rows($resItem)!=0){
+    if(mysqli_num_rows($resItem)!=0){
       $ret = array();
-      while($data = mysql_fetch_assoc($resItem)){
+      while($data = mysqli_fetch_assoc($resItem)){
         array_push($ret, array(
         'id' => $data['id'],
         'name' => $data['name'],