[Not a question] upload files(images,video,audio) into database

$a=$_FILES["file"]["name"];

$con = mysql_connect("localhost","root","");

if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
  
mysql_select_db("film", $con);
mysql_query("INSERT INTO member (filmname,content,pic_name) 
VALUES('$_POST[fn]','$_POST[t1]','$a')");

if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg"))
&& ($_FILES["file"]["size"] < 20000000))
  {
  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
    }
  else
    {
    if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. ";
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "upload/" . $_FILES["file"]["name"]);
      }
    }
  }
else
  {
  echo "Invalid file";
  }
mysql_close($con);
?>