Delete multiple rows mysql with checkbox - php

Question

please help in deleting multiple rows from a table.
home.php
<form action="del.php" method="get" enctype="multipart/form-data">
<?php
while($row=mysql_fetch_array($rs))
{
?>
<tr>
<td align="center" bgcolor="#FFFFFF"><input name="need_delete[<?php echo $row['id']; ?>]" type="checkbox" id="checkbox[<?php echo $row['id']; ?>]" value="<?php echo $row['id']; ?>"></td>
<td><?php echo $row['listingtype'];?></td>
<td><?php echo $row['propertyname'];?></td>
<td><?php echo $row['price'];?></td>
<td><?php echo $row['listdate'];?></td>
</tr>
<?php
}
?>
</table>
<tr>
<td colspan="5" align="center" bgcolor="#FFFFFF"><input name="delete" type="submit" id="delete" value="Delete"></td>
</tr></form>
del.php
<?php
include "include/db.php";
$tbl_name='propertylistingbasicinfo';
// Check if delete button active, start this
if ( ! empty($_POST['delete'])) {
foreach ($_POST['need_delete'] as $id => $value) {
$sql = 'DELETE FROM `'.$tbl_name.'` WHERE `id`='.(int)$id;
mysql_query($sql);
}
header('Location: home.php');
}
?>
Error : When i click on delete button, blank screen come.
And url looks like this : http://localhost/realestate/del.php?need_delete%5B2%5D=2&delete=Delete

Answer 1

your mixing up GET with POST, change form method to post

Answer 2

You need something similar to this in your form
<input type="checkbox" name="record[]" value="<?php echo $id ?>">
then you can use implode() function to concatenate ids and remove them
$deleted = implode(',',$_POST['record']);
$query = mysql_query("delete from table where id in ('$deleted') ");
Not tested but this the idea.

Answer 3

The problem is that you are submitting the form with method="get" and in del.php, you are accessing values from $_POST. Change method="get" to method="post" on home.php

Answer 4

I would change it to the following...
home.php:
<form action="del.php" method="post" enctype="multipart/form-data">
<table>
<?php while($row=mysql_fetch_array($rs)) { ?>
<tr>
<td align="center" bgcolor="#FFFFFF">
<input name="need_delete[]" value="<?php echo $row['id']; ?>" type="checkbox" id="checkbox[<?php echo $row['id']; ?>]" />
</td>
<td><?php echo $row['listingtype'];?></td>
<td><?php echo $row['propertyname'];?></td>
<td><?php echo $row['price'];?></td>
<td><?php echo $row['listdate'];?></td>
</tr>
<?php } ?>
<tr>
<td colspan="5" align="center" bgcolor="#FFFFFF">
<input name="delete" type="submit" id="delete" value="Delete" />
</td>
</tr>
</table>
del.php:
<?php
//Get the db-file and set the table name
include "include/db.php";
$tbl_name='propertylistingbasicinfo';
// Check if delete button active, start this
if ( !empty($_POST['delete'])) {
//Let's sanitize it
$sanitized_post_ids = array();
foreach($_POST['need_delete'] as $id ) $sanitized_post_ids[] = intval($id);
//Get the ids and add a trailing ",", but remove the last one
$in_str = substr(implode(',', $sanitized_post_ids), 0, -1);
//Build the sql and execute it
$sql = 'DELETE FROM ' . $tbl_name ' WHERE id IN (' . $in_str . ')';
mysql_query($sql);
//Redirect!
header('Location: home.php');
}
?>
Hope this works out for you (and that I didn't manage to add a typo or similar misshaps)!