Posted by Colin Ross on 03/29/05 14:28

oops.. how bout if i send it to the group too...

> http://us4.php.net/manual/en/function.preg-split.php
>
> example for you:
>
> $groups = '0101000100101010001110010100111';
> $groups_array = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);
> print_r($groups_array);
> $groups_as_string = implode($groups_as_string);
> echo $groups_as_string;
>
> Note: As of PHP 4.3.0, the glue parameter of implode() is optional
> and defaults to the empty string(''). This is not the preferred usage
> of implode(). We recommend to always use two parameters for
> compatibility with older versions.
>
> I know implode is binary-safe, not sure about preg_split()
>
> you COULD also use spliti() instead of preg_split()
> http://us4.php.net/manual/en/function.spliti.php
>
> Colin
>
> On Tue, 29 Mar 2005 20:35:02 +1000, Robert S <robert_s@emailme.net.au> wrote:
> > I am writing a contact manager in php/mysql. I'd like to use a binary array
> > as an efficient way to store information for groups that each contact
> > belongs to eg:
> >
> > Field: 'group': 001010 means that the contact belongs to the second and
> > fourth group.
> >
> > If the array is of type Byte, it should be able to store information about
> > 255 groups.
> >
> > Is php/mysql able to handle this? My specific questions are:
> >
> > What functions set/clear a bit in an array in php?
> > How do you query whether a bit is set in mysql?
> >
> > I hope I've made this clear enough to be followed - I'm not a pro!
> >
> > --
> > PHP General Mailing List (http://www.php.net/)
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> >
> >
>

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