Dynamic checkboxes question!

[pthurmond]

Ok, so I have a list of dynamically generated items that is using an array to record each value to be processed by the next script.
I would like to know if this array will only contain the values of the checkboxes that were checked, or will it contain the values of all the generated checkboxes, regardless of whether or not it was checked?
I think it will only contain the values of the checked checkboxes, but I want to be sure.

Here is the code:
[code]
echo '<td width="25"><input name="' . $event[] . '" type="checkbox" value="' . $value . '"></td>';
[/code]

Also I will be processing it as an array in the processing script, will this work?:
[code]
foreach($_POST['event'] as $key => $val)
{
$events[$key] = $val;
}
[/code]


Thanks again for the help,
Patrick

[Skatecrazy1]

Only posts values of checked boxes.

[toplay]

I think you meant to use event[] as in this way:

echo '<td width="25"><input name="event[]" type="checkbox" value="', $value, '"></td>';

in order to access them this way: $_POST['event'][0], $_POST['event'][1], etc.

[pthurmond]

Thank you for all your help, however the post by toplay confuses me a bit.
First off I am guessing that I don't need to echo event[] outside the string of html.

Secondly are you sure for the value you don't mean this:
[code]
    echo '<td width="25"><input name="event[]" type="checkbox" value="' . $value . '"></td>';
[/code]

Third, can I still use the foreach() loop? And if so, how exactly does it work for a multi-dimensional array?


Thanks,
Patrick

[Nhoj]

[code] foreach ($_POST['event'] as $key => $value){
echo $_POST['event'];
}
[/code]

[pthurmond]

So would this work just as well?

[code]
foreach($_POST['event'] as $key => $val)
{
$events[$key] = $_POST['event'];
}
[/code]

I am trying to get an array of values. This array will later be converted into a string of comma separated values with the implode function.

Thanks,
Patrick

[Nhoj]

It looks like it would work from my view....try giving it a whirl on a test page and at the end print the entire array with this to see if it works:

[code]echo "<pre>";
print_r ($events);
echo "</pre>";[/code]

[toplay]

[quote author=pthurmond link=topic=114670.msg466646#msg466646 date=1163288644]
Thank you for all your help, however the post by toplay confuses me a bit.
First off I am guessing that I don't need to echo event[] outside the string of html.

Secondly are you sure for the value you don't mean this:
[code]
    echo '<td width="25"><input name="event[]" type="checkbox" value="' . $value . '"></td>';
[/code]

Third, can I still use the foreach() loop? And if so, how exactly does it work for a multi-dimensional array?


Thanks,
Patrick
[/quote]
1) Right (if I understand your question).

2) You can use the period as a concatenation character in the echo, however, the echo is a PHP language construct and you can use commas to seperate values.

3) Yes, you can use foreach(). Example:

[code=php:0]
foreach($_POST['event'] as $key => $val)
{
echo 'Array index: ', $key, ' Value: ', $val;
}
[/code]

So, if you used this: echo '<td width="25"><input name="event[]" type="checkbox" value="1"></td>';

Then it would display:

Array index: 0 Value: 1