尝试使用复选框更新php中的多行

Question

I am trying to update multiple values from table via PHP using checkboxes. I am missing something but I have been stuck for hours. What i am doing wrong? Nothing gets updated.

<?php

        if(mysqli_num_rows($query) > 0){

            while($row = mysqli_fetch_assoc($query)){

    ?>

    <tr>

        <td align="center"><input type="checkbox" name="checked_id[]" class="checkbox" value="<?php echo $row['lead_id']; ?>"/></td>        
        <td><input name="lead_id[]" type="hidden" value= "<?php echo $row['lead_id']; ?>"></td>

        <td><input name="lead_compname[]" type="text" value= "<?php echo $row['lead_compname']; ?>"></td>
        <td><input name="lead_add[]" type="text" value= "<?php echo $row['lead_add']; ?>"></td>
        <td><input name="lead_city[]" type="text" value= "<?php echo $row['lead_city']; ?>"></td>   
        <td><input name="lead_cp[]" type="text" value= "<?php echo $row['lead_cp']; ?>"></td>
        <td><input name="lead_cpd[]" type="text" value= "<?php echo $row['lead_cpd']; ?>"></td>
        <td><input name="lead_cpno[]" type="text" value= "<?php echo $row['lead_cpno']; ?>"></td>   
        <td><input name="lead_cpemail[]" type="text" value= "<?php echo $row['lead_cpemail']; ?>"></td>
        <td><input name="value[]" type="text" value= "<?php echo $row['value']; ?>"></td>
        <td><input name="clodate[]" type="text" value= "<?php echo $row['clodate']; ?>"></td>
        <td><input name="prodtype[]" type="text" value= "<?php echo $row['prodtype']; ?>"></td>



    </tr> 

    <?php } }else{ ?>

        <tr><td colspan="5">No records found.</td></tr> 

    <?php } ?>

action file is

<?php

session_start();

include_once('dbConfig.php');

if(isset($_POST['bulk_delete_submit'])){

    $idArr = $_POST['checked_id'];

    foreach($idArr as $id){

        mysqli_query($conn,"UPDATE leadinfor SET lead_compname='$lead_compname[$id]', lead_add='$lead_add[$id]' WHERE lead_id='$lead_id[$id]'");

    }

    $_SESSION['success_msg'] = 'Updated successfully.';

    header("Location:upd.php");

}

?>

Answer 1

First; sometimes it helps to see just what exactly is being sent. Make use of PHP's debugging functionality.

For example;

var_dump($_POST);

Once you have determined the key/value within the $_POST super global array you can then update your SQL statement accordingly.