php中数据库的数组更新

我目前正在尝试更新MySQL数据库中的现有记录，这是我的表单：

<?php
    $tampilann = mysql_query("SELECT * FROM `gajikaryawanluar` WHERE no_karyawan ='$_GET[id]' AND id_gajikaryawan='$_GET[gk]'");
    $x12 = mysql_fetch_array($tampilann);

    echo "  <div class='box-header well' data-original-title>
                <h2><i class='icon-user'></i> EDIT Gaji Karyawan -'$t[nama]'-</h2>
                <div class='box-icon'>
                    <a href='#' class='btn btn-setting btn-round'><i class='icon-cog'></i></a>
                    <a href='#' class='btn btn-minimize btn-round'><i class='icon-chevron-up'></i></a>
                    <a href='#' class='btn btn-close btn-round'><i class='icon-remove'></i></a>
                </div>
            </div>
            <div class='box-content'>
                <form name='form_demand' class='form-horizontal' method=POST action='modul/mod_gaji/aksi_gajikaryawan.php?module=gajikaryawan&act=edit_gajikaryawanluarlama'' enctype='multipart/form-data'>
                <div class='control-group'>
            <label class='control-label' for='typeahead'>Id Gaji Karyawan </label>
            <div class='controls'>
            <input type='hidden'  name='id_gajikaryawanluarlama' value='$_GET[gk]' >
            <input type='hidden'  name='id_gajikaryawan' value='$x12[id_gajikaryawan]' > 
            <input type='text'  name='id_gajikaryawan' value='$x12[id_gajikaryawan]'disabled >
            </div>
        </div>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>Id Karyawan</label>
                    <div class='controls'>
                        <input type='text' class='span3 typeahead' id='typeahead'  name='no_karyawan' value='$t[no_karyawan]' >
                    </div>
                </div>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>Nama Karyawan</label>
                    <div class='controls'>
                        <input type='text'   name='nama' value='$t[nama]' disabled > 
                    </div>
                </div>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>Bagian Kerja</label>
                    <div class='controls'>
                        <input type='text'   name='bagiankerja' value='$t[bagian]' disabled> 
                    </div>
                </div>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>Tahun</label>
                    <div class='controls'>
                        <input type='text' class='span3 typeahead' id='typeahead'  name='tahun' value='$tahun' >
                    </div>
                </div>
        <div class='control-group'>
                    <label class='control-label' for='typeahead'>Tahun</label>
                    <div class='controls'>
                        <input type='text' class='span3 typeahead' id='typeahead'  name='bln' value='".bulan($x12[bulan])."' >
                        <input type='hidden'  name='bulan' value='$x12[bulan]' > 
                    </div>
                </div>

    <br><br><table class='table table-striped table-bordered bootstrap-datatable datatable'><thead>
    <tr><th width='30px'><p align='center'>NO</p></th><th width='20px'><p align='center'>Nilai</p></th><th width='50px'><p align='center'>Harga Barang</p></th><th width='20px'><p align='center'>Jumlah Barang</p></th></tr></thead>";

    $tampil_barangdalam= mysql_query("SELECT * FROM barangluar order by id_barangluar asc ");
    $no = 1;
    while ( $r = mysql_fetch_array($tampil_barangdalam) )
    {
        $hargabaruf = number_format( $r[hargabaru], 0, ",", "." );
        $hargalamaf = number_format( $r[hargalama], 0, ",", "." );

        echo "<tr><td><p align='center'>$no</p></td>
        <td><p align='center'>$r[nilai] </p></td>
        <td><p align='center'><input type='hidden'   class='span5 typeahead' name='id_barangluar[]' value ='$r[id_barangluar]'>
                            <input type='hidden'   class='span5 typeahead' name='hargabaru[]' value ='$r[hargalama]'>   Rp $hargalamaf</p></td>
        <td><p align='center'><input type='text'  class='span5 typeahead' name='jumlahbarang[]' value ='$r[hasil]' > </p></td>
        ";

        $no++;
    }
    echo "</table>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>DML</label>
                    <div class='controls'>
                        <input type='text'   name='dml' value ='$x12[dml]'> 
                    </div>
                </div>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>Potongan</label>
                    <div class='controls'>
                        <input type='text'   name='potongan' value ='$x12[potongan]'> 
                    </div>
                </div>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>Nilai Potongan</label>
                    <div class='controls'>
                        <input type='text'   name='nilaipotongan' value ='$x12[nilaipotongan]' > 
                    </div>
                </div>
                <div class='control-group'>
                    <label class='control-label' for='typeahead'>Bonus Target</label>
                    <div class='controls'>
                        <input type='text'   name='bonustarget' value ='$x12[bonustarget]' > 
                    </div>
                </div>

                <div class='form-actions'>
                    <button type='submit' class='btn btn-primary'>Save changes</button>
                    <button type='reset' class='btn'>Cancel</button>
                </div>
                </fieldset>
            </form>   
        </div>
    ";

这是更新的脚本

<?php
    $id_gajikaryawanluarlama = $_POST['id_gajikaryawanluarlama'];
    $id_gajikaryawan = $_POST['id_gajikaryawan'];
    $no_karyawan = $_POST['no_karyawan'];
    $tahun = $_POST['tahun'];
    $bulan = $_POST['bulan'];
    $jumlahbarang = $_POST['jumlahbarang'];
    $dml = $_POST['dml'];
    $potongan = $_POST['potongan'];
    $nilaipotongan = $_POST['nilaipotongan'];
    $bonustarget = $_POST['bonustarget'];
    $id_barangluar  =  $_POST['id_barangluar'];

    foreach ($id_barangluar as $key => $idbarangluar) {
    $jumlahbarang = $_POST['jumlahbarang'][$key];
    $hargabarang = $_POST['hargabaru'][$key];
    $hasiltotal= ($jumlahbarang * $hargabarang);

    $hasil = mysql_query(" UPDATE `lympersada`.`gajikaryawanluar` SET `id_gajikaryawan` ='$id_gajikaryawan', 
                            `no_karyawan`='$no_karyawan',
                            `id_barangluar`='$idbarangluar', 
                            `tahun`='$tahun', 
                            `bulan`='$bulan',
                            `hasil`='$jumlahbarang', 
                            `dml`='$dml',
                            `potongan`='$potongan',
                            `nilaipotongan`='$nilaipotongan',
                            `bonustarget`='$bonustarget' where `id_gajikaryawan`='$id_gajikaryawanluarlama' ;"
                        );

    $hasil2 = mysql_query(" UPDATE `lympersada`.`reportgaji` SET `id_gajikaryawan`='$id_gajikaryawan',
                            `no_karyawan`='$no_karyawan',
                            `tahun`='$tahun',
                            `bulan`='$bulan', 
                            `hasiltotal`='$hasiltotal' where `id_gajikaryawan`='$id_gajikaryawanluarlama'; "
                        );

---

当我尝试更新数组时，数据只会输入到数据库中来自输入的最新数据。代码哪里错了？有人能帮我修一下吗

感谢您的评论@xsamiYou welcome！：@辛德拉