Posting and processing data in html checkbox arrays

Question

I would like to post data in checkboxes, as like

<?php foreach($data as $foreignid => $id): ?>
<input type="checkbox" 
       name="photoids[<?php echo $foreignid; ?>]" 
       value="<?php echo $id;?>"
                       />

If I go this way only one key-value pair remains in my $_POST array.

If I leave the photoids[] array empty, (not echoing out the $foreignid) all of the key-value pairs remains in $_POST array, but then i don't have access to the $foreignid variable which that I need in my code.

What is the best workaround for this problem?

DamirR · Accepted Answer · 2012-01-09 21:33:58Z

1

Use this:

<?php foreach($data as $foreignid => $id): ?>
<input type="checkbox" 
       name="photoids_<?php echo $foreignid; ?>" 
       value="<?php echo $id;?>"
                   />

And then parse keys in $_POST array that begin with photoids to obtain foreignid.

Or use this:

<?php foreach($data as $foreignid => $id): ?>
<input type="checkbox" 
       name="photoids[]" 
       value="<?php echo $foreignid . '_' . $id;?>"
                   />

And then parse values to obtain foreignid and id.

Of course, assuming that underscore '_' will not show up in foreignid or id.

You can parse name or value using:

$src = '123_987';
$arr = explode('_', $src);

$arr[0] will contain 123 and $arr[1] will contain 987.

answered Jan 9, 2012 at 21:33

DamirR

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Comments

Luc Laverdure · Accepted Answer · 2012-01-09 21:24:14Z

0

Maybe something like this:

<?php foreach($data as $foreignid => $id): ?>
<input type="checkbox" 
name="photoids[<?php echo $foreignid; ?>]" 
value="<?php echo $foreignid."/".$id."/".$data;?>"
/>

answered Jan 9, 2012 at 21:24

Luc Laverdure

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