Keep Checkboxes Checked Upon From Submit

Below is the code for my checkboxes, I have got a FOREACH loop which creates all the checkboxes.

foreach ($cat as $index => $value)
{
echo '<input type="checkbox" name="selection[]" value="'.$cat[$index][2].'" id="'.$index.'"/>'.$cat[$index][2].';
}

Code (markup):

I've got some form processing going on that counts the number of checkboxes that are checked and if it is less than 3 then it redisplays the form with an error message. But I would like it to keep the checkboxes ticked too - how can this be acheived with the above code setup?

 

try this

foreach ($cat as $index => $value)
{
	$selected = ($_REQUEST['selection'][$index]) ? ' checked="checked"':'';
	echo '<input type="checkbox" name="selection[]" value="'.$cat[$index][2].$selected.'" id="'.$index.'"/>'.$cat[$index][2];
}

PHP:

 

Unfortunately that didn't work. I am using the form method POST if that's any more help...

 

Anybody have any ideas?

 

I've not used foreach when using lots of checkboxes - I number them instead with the id from the table in the database and check them afterwards with a while() loop.

Build your checkboxes with a number on the end like this:

<input type="checkbox" name="chk1" />
<input type="checkbox" name="chk2" />
<input type="checkbox" name="chk3" />

Code (markup):

and so-on.

Next use something like this to rebuild them:

$row=mysql_query("SELECT data FROM table");
while ($row=mysql_fetch_assoc($query)) {
  echo '<input type="chechkbox" name="chk'.$row['id'].'"'.($_POST['chk'.$row['id']] ? ' checked="checked"' : '').' />';
}

PHP:

 

Hi Yesideez,

I'm not using a database, in fact I'm storing the menu data in an array $cat.

Do u know how I can implement your solution using the variables I have used in my code above?

 

$arrSize=count($cat);
for ($i=0;$i<$arrSize;$i++) {
   echo '<input type="checkbox" name="chk'.$i.'"'.($_POST['chk'.$i] ? ' checked="checked"' : '').' />';
}

PHP:

Try that and see how you go.