masih error

<?php
include CHAPPS_PATH."files/chapps.php";

function UploadImage($fupload_name){
  //direktori gambar
  $vdir_upload ='foto_artikel/';
  $vfile_upload = $vdir_upload . $fupload_name;

  //Simpan gambar dalam ukuran sebenarnya
  move_uploaded_file($_FILES["portofolioupload"]["tmp_name"], $vfile_upload);

  //identitas file asli
    //mencaritahu ekstensi gambar
    $extensi=explode(".",$vfile_upload);
    $ext=end($extensi);
    if($ext == 'jpg' || $ext == 'JEPG'){
        $im_src = imagecreatefromjpeg($vfile_upload);
        $src_width = imageSX($im_src);
        $src_height = imageSY($im_src);
    }
    else if($ext == 'png'){
        $im_src = imagecreatefrompng($vfile_upload);
        $src_width = imageSX($im_src);
        $src_height = imageSY($im_src);
        }
        elseif($ext == 'gif'){
            $im_src = imagecreatefromgif($vfile_upload);
            $src_width = imageSX($im_src);
            $src_height = imageSY($im_src);
            }

  //Simpan dalam versi small 110 pixel
  //Set ukuran gambar hasil perubahan
  $dst_width = 110;
  $dst_height = ($dst_width/$src_width)*$src_height;

  //proses perubahan ukuran
  $im = imagecreatetruecolor($dst_width,$dst_height);
  imagecopyresampled($im, $im_src, 0, 0, 0, 0, $dst_width, $dst_height, $src_width, $src_height);


  //Simpan gambar
  imagejpeg($im,$vdir_upload . "small_" . $fupload_name);

  //Hapus gambar di memori komputer
  imagedestroy($im_src);
  imagedestroy($im);
}

$seminggu = array("Minggu","Senin","Selasa","Rabu","Kamis","Jumat","Sabtu");
$hari = date("w");
$hari_ini = $seminggu[$hari];
$tgl_sekarang=date('Y-m-d');
$jam_sekarang=date('H:i');

  $lokasi_file    = $_FILES['portofolioupload']['tmp_name'];
  $tipe_file      = $_FILES['portofolioupload']['type'];
  $nama_file      = $_FILES['portofolioupload']['name'];
  $acak           = rand(1,99);
  $nama_file_unik = $acak.$nama_file;

  // Apabila ada gambar yang diupload

$judul = mysql_real_escape_string($_POST['judul']);
$isi = mysql_real_escape_string($_POST['keterangan']);
  if (!empty($lokasi_file)){
    UploadImage($nama_file_unik);
    mysql_query("INSERT INTO artikel(id,
                                    judul,
                                    keterangan,
                                    foto)
                            VALUES('',
                                      '$judul',
                                   '$isi',
                                   '$nama_file_unik')")or die(mysql_error());
  }
  else{
    mysql_query("INSERT INTO artikel(id,
                                    judul,
                                    keterangan)
                            VALUES('',
                                      '$judul',
                                   '$isi')")or die(mysql_error());
  }
$hal="portofolio.php";
echo "<meta http-equiv=\"refresh\" content=\"2;url=$hal\">";
  ?>