RE: [PHP] How do I convert an array into a mask?
| From: | John W. Holmes | Date: | Wed, 06 Nov 2002 12:33:58 +0000 |
| Subject: | RE: [PHP] How do I convert an array into a mask? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-122971@lists.php.net to get a copy of this message | ||
> That's the EASY part John!
>
> The hard part is converting the array (which was a checkbox array from
a
> form submission) into the binary string (as per the original post)
>
> > Here's the deal. Given an array such that:
> > $purchitem[0] = 1; //purchased book #1 checkbox enabled
> > $purchitem[1] = 3; //purchased book #3 checkbox enabled
> > $purchitem[2] = 4; //purchased book #4 checkbox enabled
> > I want to end up with a variable like this:
> > $mask = "10110";
>
> Get it now? ;-)
Got it...
Are there always going to be X digits in the code? If so, this would
work.
<?
$purchitem[0] = 1;
$purchitem[1] = 3;
$purchitem[2] = 4;
$mask = '';
$length = 5;
$y = 0;
for($x=1;$x<$length+1;$x++)
{
if(@$purchitem[$y] == $x)
{
$mask .= '1';
$y++;
}
else
{ $mask .= '0'; }
}
echo $mask;
?>
---John Holmes...