Upload Image to Folder & Store Name in Database

<?php

$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);
$uimg=$_FILES["file"]["name"];

if ($_FILES["file"]["error"] > 0) 
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
} 
else 
{
    echo "Upload: " . $_FILES["file"]["name"] . "<br>";
    echo "Type: " . $_FILES["file"]["type"] . "<br>";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>";
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>";
    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"]);
      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
    }
  }
?>