Added a class to retrieve the basic item information data.

db/category.php

@@ -1,8 +1,25 @@
 <?php
+    require "db.php";
 
-    function get_category_items($db)
+    function get_category_items()
     {
-        return mysqli_query($db, "SELECT * FROM `category`");       
+        global $conn;
+        $items = mysqli_query($conn, "SELECT * FROM `category`");       
+        $conn->close();
+
+        return $items;
     }
 
+    function create_category($name)
+    {
+        global $conn;
+        $statement = $conn->prepare("INSERT INTO `category` (category_name) VALUES (?)");
+        $statement->bind_param("s", $name);
+        if($statement->execute() == true){
+
+        }
+
+        $statement->close();
+        $conn->close();
+    }
 ?>

db/db.php

@@ -4,6 +4,6 @@
     $password = '1a9t7y';
     $db_name = 'inventory';
     
-    $db = mysqli_connect($host, $user_name, $password, $db_name) or die("Failed to 
-    connect to MySQL: " . mysqli_error($db));
+    $conn = mysqli_connect($host, $user_name, $password, $db_name) or die("Failed to 
+    connect to MySQL: " . mysqli_error($conn));
 ?>

db/item_info.php

@@ -0,0 +1,14 @@
+<?php
+    require "db.php";
+
+    function get_item_base_attributes(){
+        global $conn;
+        $query = "SELECT COLUMN_NAME
+                  FROM INFORMATION_SCHEMA.COLUMNS
+                  WHERE TABLE_SCHEMA = 'inventory' AND TABLE_NAME = 'item_info';";
+        $data = mysqli_query($conn, $query);        
+        $conn->close();
+
+        return $data;
+    }
+?>