Multiple checkboxes with same name but diff values

[Anon]

Hi,

I have a problem evaluating a HTML Form like this:

<form method="post" action="action.php">
<input type=checkbox name="del" value="1">
<input type=checkbox name="del" value="2">
<input type=checkbox name="del" value="3">
<input type=checkbox name="del" value="4">
<input type=checkbox name="del" value="5">
<input type=checkbox name="del" value="6">
:
:
<input type=submit>
</form>

Assume that two or more items are checked.
When submitting the form I will always get only one variable $del with the last checked value. How can I get all checked item values (for example as an array of values) ?

Thanks,
Tom

[Anon]

You solve the problem if use an array.
Like this:
...
<input type=checkbox name="del[1]" value="1">
<input type=checkbox name="del[2]" value="2">
<input type=checkbox name="del[3]" value="3">
<input type=checkbox name="del[4]" value="4">
<input type=checkbox name="del[5]" value="5">
<input type=checkbox name="del[6]" value="6">
...

/Metin A.

[Anon]

A checkbox must have a unique name.
Radiobuttons can have the same name to form a group.

You can probably make it work using the solution that Metin A. offers,
But the basic HTML is not correct.

[Anon]

i'm not sure but i think you could use the same name of array
Like this:

<input type=checkbox name="del[]" value="1">
<input type=checkbox name="del[]" value="2">
<input type=checkbox name="del[]" value="3">
<input type=checkbox name="del[]" value="4">
<input type=checkbox name="del[]" value="5">
<input type=checkbox name="del[]" value="6">

the array will be automatically filled with the correct index ...

hope it'll helpfull

[Anon]

This method is perfectly okay:

<input type=checkbox name="del[]" value="1">
<input type=checkbox name="del[]" value="2">
<input type=checkbox name="del[]" value="3">
<input type=checkbox name="del[]" value="4">
<input type=checkbox name="del[]" value="5">
<input type=checkbox name="del[]" value="6">

You can now access these elements either using a while or for loop.

if (count($del) > 1) {
for ($i=0;$i<count($del);$i++) {
$result[$i] = mysql_query("DELETE FROM TABLENAME WHERE id = '$del[$i]'");

  }

}

[Anon]

Did you get this to work?

[Anon]

Yes. This works fine for me.

First I tried this:

<input type=checkbox name="del[1]" value="1">
<input type=checkbox name="del[2]" value="2">
<input type=checkbox name="del[3]" value="3">
<input type=checkbox name="del[4]" value="4">
<input type=checkbox name="del[5]" value="5">
<input type=checkbox name="del[6]" value="6">

and it works fine. Than I tried this:

<input type=checkbox name="del[]" value="1">
<input type=checkbox name="del[]" value="2">
<input type=checkbox name="del[]" value="3">
<input type=checkbox name="del[]" value="4">
<input type=checkbox name="del[]" value="5">
<input type=checkbox name="del[]" value="6">

and it works fine, too. I decided to use to second variant, because I don't care about array indices.

Tom

[Anon]

hello,

I have a problem getting the values of checkboxes with the same name. I'm including the javascript functionality like uncheck and checkall. When I name my checkboxes as list (without the []) my javascript works, but when getting the values of the checked checkboxes, it only returns the last value. But when I name my checkboxes as list[], I'm able to get all the values of checked checkboxes but my javascript doesnt work. I saw an example of this, naming the checkboxes without the [] but they were able to get the values of the checked checkboxes.... I saw this in yahoo. they named their checkboxes as Mid without the [], but was able to get the values. Hope you can help me with my problem. 🙂

[Anon]

Hi,

the variable Name has to be with [] to get the results in an array.

To select all items I'm using this JS Function:

function all() {
var Msg = document.forms["list"];

    for (var x = 0; x < Msg.length; x++)
            if (typeof Msg.elements[x].checked != "undefined")
                    Msg.elements[x].checked = true;

}

To unselect all items I'm simply reset to form.

Hope this helps,

Thomas

[Anon]

I can make it work,

could you please write the whole again, include the JS script?

Regards

Johan

[Anon]

Generate your checkboxes like these:

<form method="post" action="whatever.php">
...
<input type=checkbox name="del[]" value="1">
<input type=checkbox name="del[]" value="2">
...
<input type=submit>
<input type=reset>
</form>

or, if you like predefined array indices:

<form method="post" action="whatever.php">
...
<input type=checkbox name="del[1]" value="1">
<input type=checkbox name="del[2]" value="2">
...
<input type=submit>
<input type=reset>
</form>

In whatever.php you will have an array-var named $del[] which contains the selected items.

To select all items I'm using this JS Function:

function all() {
var Msg = document.forms["yourframename"];

for (var x = 0; x < Msg.length; x++)
if (typeof Msg.elements[x].checked != "undefined")
Msg.elements[x].checked = true;
}

To unselect all items I'm simply reset the form.

Thomas

[Anon]

Hi,

How should I do if i want to selct all checkboxes and reset it with the same button?

I now use the a checkbox to mark all but if I "empty" the checkbox it should clear all selected.

Do you know how to do this?

[Anon]

I haven't done this for now, but you can try to do it like this: every time the "master" checkbox (which you use for check/uncheck all others) is clicked (use the onClick Event) read out the current value of the "master" checkbox and set the checked-Property of all other checkboxes to the same value than the first one.

[Anon]

Hi,

May seem stupid but just in case you dont get it to work, make sure the checkboxes are defined between the <form> and </form> tags...

grtz
MRJB

[Anon]

var Msg = document.forms["yourframename"];

Instead of 'yourframename' it would be better to say 'yourformname'. I tried everything until I discoverd that it should be just that.

[Anon]

I am a javascript inept idiot. Could someone actually show the HTML and JAVASCRIPT code that would be used in the onLick event?

Thanks