upload ganti ke copy dan ganti logic

<?php
$update=true;
if ($act=='update'){
    $lokasi_file = $_FILES['image']['tmp_name'];
    $tipe_file = $_FILES['image']['type'];
    $nama_file = $_FILES['image']['name'];
    $acak = rand(1,99);
    $nama_file_unik = $acak.$nama_file;


    if (empty($lokasi_file)){
        $update=mysql_query("UPDATE slide SET judul='$_POST[judul]',
        detail='$_POST[kata]',
        link='$_POST[link]'
        WHERE kd_slide = '$_POST[kd_slide]'");
    }
    else{
        if( UploadImage1($nama_file_unik)){
            $update=mysql_query("UPDATE slide SET judul='$_POST[judul]',
            detail='$_POST[kata]',
            link='$_POST[link]',
            image='$nama_file_unik'
            WHERE kd_slide = '$_POST[kd_slide]'");
        }
        else{
            $update=false;
        }
    }


}else{
    $update=false;
}

if($update ===FALSE){
        echo '
        <div class="wrapper-page">
        <div class="ex-page-content text-center">
        <h2>Gagal Edit Data</h2>
        <br>
        <p class="text-muted">
        Hubungi admin untuk perbaiki.
        </p>
        <br>
        <a class="btn btn-default waves-effect waves-light" href="admin.php"> Return Home</a>

        </div>
        </div>
        ';
}
else{
    header('location:admin.php?page=slide');exit();
}



function UploadImage1($fupload_name){
    //direktori gambar
    $vdir_upload = "../images/slider/";
    $vfile_upload = $vdir_upload . $fupload_name;

    //chmod("$vfile_upload", 0644);

    //Simpan gambar dalam ukuran sebenarnya
    if(copy($_FILES["image"]["tmp_name"], $vfile_upload)){
        //identitas file asli
        $im_src = imagecreatefromjpeg($vfile_upload);
        $src_width = imageSX($im_src);
        $src_height = imageSY($im_src);

        //Simpan dalam versi small 1920 pixel
        //Set ukuran gambar hasil perubahan
        $dst_width = 1920;
        $dst_height = ($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);

    }else{
        return false;
    }

}