tambah_buku.php

<?php
include"../../db.php";
$kategori = $_POST['kategori'];
$katalog = $_POST['katalog'];
$judul = $_POST['judul'];
$pengarang = $_POST['pengarang'];
$penerbit = $_POST['penerbit'];
$halaman = $_POST['halaman'];
$harga = $_POST['harga'];
$deskripsi = $_POST['deskripsi'];
$tanggal = $_POST['tanggal'];
$id_katego = mysqli_query($dbConn,"SELECT * from kategori where kategori='$kategori'");
$id_kategor = mysqli_fetch_array($id_katego);
$id_kategori = $id_kategor['id_kategori'];
$id_kata = mysqli_query($dbConn,"SELECT * from katalog where katalog='$katalog'");
$id_katalo = mysqli_fetch_array($id_kata);
$id_katalog = $id_katalo['id_katalog'];
@$message       = '';
$valid_file     = true;
$max_size       = 1024000; // Ukuran maksimal file yang akan diupload (dalam byte)


if($_FILES['gambar']['name']){
    // if no errors...
    if(!$_FILES['gambar']['error']){

        // now is the time to modify the future file name and validate the file
        $new_file_name = strtolower($_FILES['gambar']['tmp_name']); //rename file menjadi huruf kecil
        if($_FILES['gambar']['size'] > $max_size) //file tidak boleh lebih besar dari ukuran maksimal
        {
            $valid_file = false;
            $message    = 'Maaf, file terlalu besar. Max: 1MB';
        }



        // Mengatur format file yang boleh diupload
        $image_path = pathinfo($_FILES['gambar']['name'],PATHINFO_EXTENSION); //ambil extensi file
        $extension = strtolower($image_path); //rename extensi file menjadi huruf kecil

        if($extension != "jpg" && $extension != "jpeg" && $extension != "png" && $extension != "gif" ) {
            $valid_file = false;
            $message    = "Maaf, file yang diijinkan hanya format JPG, JPEG, PNG & GIF. #".$extension;
        }



        // jika file lolos filter
        if($valid_file == true)
        {
            // mengganti nama gambar
            $rename_nama_file   = date('YmdHis');
            $nama_file_baru     = $rename_nama_file.'.'.$extension;


            // simpan ke database
            mysqli_query($dbConn,"INSERT into buku set judul='$judul',id_kategori='$id_kategori',id_katalog='$id_katalog',pengarang='$pengarang',penerbit='$penerbit',hal='$halaman',harga='$harga',deskripsi='$deskripsi',tanggal='$tanggal',gambar='$nama_file_baru'");
            //memindahkan gambar ke tempat yang kita inginkan
            move_uploaded_file($_FILES['gambar']['tmp_name'], '../../img/gambar_buku/'.$nama_file_baru);
            header("location:buku.php");
        }
    }
    //if there is an error...
    else
    {
        //set that to be the returned message
        $message = 'Ooops!  Your upload triggered the following error:  '.$_FILES['gambar']['error'];
    }
}
?>