I have the following example table and attributes:
---------------------------
| Name | Town |
---------------------------
| Name 1 | POOLE
You could explode the towns, then loop through them and build the query like so:
$towns = explode('/', $global->getPlayerTown());
$first = true;
$like_sql = '';
foreach($towns as $town) {
$like_sql .= $first ? ' WHERE ' : ' OR ';
$like_sql .= "`Town` LIKE '%{$town}%'";
$first = false;
}
$query = "SELECT * FROM `table` {$like_sql}";
However I would recommend you normalise your data, and have a separate towns table, with a user_town pivot table.