Initial commit

indexes/process/modify/item_checkup_modify.php

@@ -0,0 +1,34 @@
+<?php
+include "../../ConnectDB.php";
+session_start();
+$username = mysqli_real_escape_string($conn, $_SESSION['username']);
+$usertype = mysqli_real_escape_string($conn, $_SESSION['user_type']);
+
+if (isset($_GET["name"], $_GET["quantity"])) {
+    if ($_GET["quantity"] > 0 && ($_GET["quantity"] <= 100 || $usertype == "buyer")) {
+        $quantity = $_GET["quantity"];
+        $name = mysqli_real_escape_string($conn, $_GET["name"]);
+        $add = "UPDATE $usertype SET `$name` = $quantity WHERE name='$username'";
+        $res = mysqli_query($conn, $add);
+        if (!$res) {
+            echo "<script type='text/javascript'>
+                alert('Error occurred!');
+            </script>";
+        }
+    }
+    else if ($_GET["quantity"] > 100 && $usertype == "seller") {
+        echo "<script type='text/javascript'>
+            alert('You can only buy 100kg of each type of fruit at a time!');
+        </script>";
+    }
+    else{
+        echo "<script type='text/javascript'>
+            alert('You cannot buy nothing!');
+        </script>";
+    }
+}
+
+echo "<script type='text/javascript'>
+    window.location.href = '../checkup.php';
+</script>";
+?>