I am using many <INPUT type="checkbox"> values in an HTML from.
I am getting these all $_POST into an array and imploding it into a string delimited by commas.

User can select only few of checkboxes.
So i am getting pattern like: val1,,,val5,,,val9,,,,,val15,
(say) for 15 checkboxes.
It should be: val1, val5, val9, val15

Some good use of PHP string functions can do so ?
Please HELP..

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This isn't too difficult to overcome. Assuming that you have an array of checkboxes that looks similar to the following:

<input type='checkbox' name='field[0]' value='value0' />
<input type='checkbox' name='field[1]' value='value1' />
<input type='checkbox' name='field[2]' value='value2' />

You can access this in PHP by doing the following. You should only have POST entries for the checkboxes that were checked in the form. Those that were not checked will not be set on the server.

if (isset($_POST['field']) && is_array($_POST['field']))
{
    $_POST['field'] = implode(',', $_POST['field']);
    // Now $_POST['field'] is a string and no longer an array.
}

The checkbox fields must be constructed with array syntax for this to work though.

HTH!

Regards,
Rich

--
[http://www.smilingsouls.net]
[http://pear.php.net/Mail_IMAP] A PHP/C-Client/PEAR solution for webmail

i've tried this for
<input type='text' name='field_xyz[0]' etc.
it is not working

but if(is_array($_POST['field']) evaluates to true

How about seeing the HTML source of the form and the PHP code you're using to access it.

Regards,
Rich

--
[http://www.smilingsouls.net]
[http://pear.php.net/Mail_IMAP] A PHP/C-Client/PEAR solution for webmail

i m using
<input type="text" name="keyword[0]" size="15">
..
..
<input type="text" name="keyword[11]" size="15">

so there are 12 textfields.
i want to combine these inputs into a single string delimited by commas and dump it into db.

if (isset($_POST['field']) && is_array($_POST['field']))
   $_string = implode(',', $_POST['field']);
did well for checkboxes

i even used:
if ($_POST['keyword']!="" && $_POST['keyword']!=NULL && $_POST['keyword']!=" " && (strlen($_POST['keyword'])!=0) && $_POST['keyword']!=0 && isset($_POST['keyword']) && is_array($_POST['keyword'])) {
    $f_keywords = implode(', ', $_POST['keyword']);
    }
to filter out empty values for <input type="text"
but can get it.

what else can be done?