<table border="0" width="100%" cellpadding="5" cellspacing="5" class="luar">
    <thead class="ju">
        <td></td>
        <td>&nbsp;&nbsp;&nbsp; Tanggal &nbsp;&nbsp;&nbsp;</td>
        <td>&nbsp;&nbsp;&nbsp; No ACC &nbsp;&nbsp;&nbsp;</td>
        <td><i>&nbsp;&nbsp;&nbsp; i &nbsp;&nbsp;&nbsp;</i></td>
        <td>&nbsp;&nbsp;&nbsp; Nama Akun &nbsp;&nbsp;&nbsp;</td>
        <td>&nbsp;&nbsp;&nbsp; Keterangan &nbsp;&nbsp;&nbsp;</td>
        <td>&nbsp;&nbsp;&nbsp; Debit &nbsp;&nbsp;&nbsp;</td>
        <td>&nbsp;&nbsp;&nbsp; Kredit &nbsp;&nbsp;&nbsp;</td>
        <td colspan="2"> ...</td>
    </thead>
<?php
    while($v_a=mysql_fetch_array($data_ini)){
    $no++;
?>
    <tbody align="center" id="baris">
         <td><input type="checkbox" name="cekb[]" value="<?php echo $v_a['kredit']?>" checked="checked"></td>
        <td><?php
        $wkt = date_create($v_a['tgl']);
        echo date_format($wkt, "d F Y"); ?></td>
        <td><?php echo $v_a['no_acc']; ?></td>
        <td><?php echo $v_a['i']; ?></td>
        <td><?php echo $v_a['nama_akun']; ?></td>
        <td><?php echo $v_a['ket']; ?></td>
        <td><?php echo rupiah($v_a['debit']); ?></td>
        <td><?php echo rupiah($v_a['kredit']); ?></td>
        <td><a href="index.php?data=e_cost&id=<?php echo $v_a['id_costumer'];?>"><img src="./images/edit.png" title="Ubah Data"></a></td>
        <td><a href="index.php?data=d_cost&id=<?php echo $v_a['id_costumer'];?>"><img src="./images/delete.png" title="Hapus Data"></a></td>
    </tbody>
<?php } ?>
</table>
///// di bawah ini file php buat menghitung field yang terceklis
<?php
    if(isset($_POST['hitung_dc']) and isset($_POST['cekb']))
    {
            $jml = 0;
            foreach($_POST['cekb'] as $val)
                    {
                            $jml = $jml + $val;
                    }
    }
    ?>
    <p>Debit <input type="text" name="debit_b" value="<?php echo $jml;?>" placeholder="Hitung dulu bos">
    <input type="submit" name="hitung_dc" value="Hitung"></p>