mysqli - PHP, MySQL(i) and Dropzone -

i wondering if can tell me i'm doing wrong. goal pretty simple. using dropzone or php upload file , insert record database. able post record except 1 field showing "array" entry. i've tried changing variable names, inserting , removing quotes, etc no avail. suggestions appreciated. here code.

    <?php $ds          = directory_separator;  //1  $storefolder = 'uploads';   //2  if (!empty($_files)) {      $tempfile = $_files['file']['tmp_name'];          //3                   $targetpath = dirname( __file__ ) . $ds. $storefolder . $ds;  //4      $targetfile =  $targetpath. $_files['file']['name'];  //5      move_uploaded_file($tempfile,$targetfile); //6  }  $servername = "localhost"; $username = "root"; $password = "***************"; $dbname = "drop";  // create connection $conn = mysqli_connect($servername, $username, $password, $dbname); // check connection if (!$conn) {     die("connection failed: " . mysqli_connect_error()); }  $sql = "insert uploads (id, file_name) values (null, 'file_name')";  if (mysqli_query($conn, $sql)) {     echo "new record created successfully"; } else {     echo "error: " . $sql . "<br>" . mysqli_error($conn); }  mysqli_close($conn); ?>  

figured out own question. answer replacing file_name $targetfile. works expected. thanks.