Creating a Search Function

One of the biggest projects of my site has been to create the ability for users to upload files, load them into a folder and their into a database, return the formatted results and format them.
Here are some of the things I've been working on:

Uploading Files

The first thing I did was create a form. The form posts to an external php file, collects inputted data about the file and there is a field that allows you to select a file (type:"file"). Here's the code I used to upload the file to the folder on the server:

  $file = ($_FILES['uploaded']['name']);
 
 /*upload*/
 $target = "upload/";
 $target = $target . basename( $_FILES['uploaded']['name']) ;
 $ok=1;
 if(move_uploaded_file($_FILES['uploaded']['tmp_name'], $target))
 {

The other main task was to add the data to the database:

  $name = $_REQUEST['name'] ;
  $tags = $_REQUEST['tags'] ;
  $submittedby = $_REQUEST['submittedby'] ;
  $file = ($_FILES['uploaded']['name']);
    $level=serialize($_POST['level']);
    $type=serialize($_POST['type']);


mysql_query("INSERT INTO Resources
(name, tags, level, type, url, submittedby) VALUES(' $name ', ' $tags ', ' $level ', ' $type ', '$file', '$submittedby') ")

or die(mysql_error()); 

echo "Data Inserted!";
 echo "The file ". basename( $_FILES['uploadedfile']['name']). " has been uploaded";
 }
 else {
 echo "Sorry, there was a problem uploading your file.";
 }

 if ($uploaded_type =="text/php")
 {
 echo "No PHP files<br>";
 $ok=0;
 }

... Just don't forget to connect to mySQL first.