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@xxxxxxxxxxxxxx> 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/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
