Echoing checkbox values to use for DELETE query is failing

Question

I cannot seem to understand why this is not echoing:

foreach($_POST["checked"] as $value) {
    echo "$value";
}

When I just use the following:

echo $_POST['checked'];

The value is shown but only for 1 checkbox.

I need to grab all the values of all checked checkboxes.

This is my checkbox:

echo '<td><input id="checked" name="checkbox[]" type="checkbox" value="'.$row['id'].'"></td>';

AFAIK, not checked checkbox will not be submitted. At least that's not guaranteed. — Passerby, May 04 '15 at 06:30

score 1 · Accepted Answer · edited May 23 '17 at 12:28

1

You are considering id attribute where as it is name attribute that gets posted.

Change it to:

foreach($_POST["checkbox"] as $value) {
  echo $value; // Also, no need of double quotes.
}

edited May 23 '17 at 12:28

Community

answered May 04 '15 at 06:29

Pupil

I just realised this method would make the query have to run many times, is there a better method to deleting using checkbox? – Elevant May 04 '15 at 06:34
Simply, get array of checkbox ids and implode them into a string eg. '12,78,87'. In Delete query, fire query like 'DELETE FROM [table_name] WHERE id IN (checkbox_ids_String)' – Pupil May 04 '15 at 06:36

Sougata Bose · Answer 2 · 2015-05-04T06:29:11.910

0

The field are named as checkbox[] not checked.

echo '<td><input id="checked" name="checkbox[]" type="checkbox" value="'.$row['id'].'"></td>';

Try with -

foreach($_POST["checkbox"] as $value) {
    echo "$value";
}

edited May 04 '15 at 06:29

answered May 04 '15 at 06:27

Sougata Bose

@LuthandoLoot There is a lot of differences between the codes. – Sougata Bose May 04 '15 at 06:30
1

It's funny that this answer gets many downvotes (peak at 3) while Pupil's identical answer below gets upvote. – Passerby May 04 '15 at 06:37
@Passerby It happens. Many users downvote without goinn through properly. :) – Sougata Bose May 04 '15 at 06:38

score 0 · Answer 3 · answered May 04 '15 at 06:35

0

after using foreach $value will also be an array like something like below

foreach($_POST['checkbox'] as $value) {
        echo "<pre>";
        print_r($value);
    }

answered May 04 '15 at 06:35

Vivek Singh

3 Answers3