So your database column for cities might read...
Manchester, Birmingham, London, Swansea, Leeds ?
Assuming the recordset is called rscity and the field name for city is called 'city' you could try to put them into an array such as
$citynames = explode(",",$row_rscity['city]);
Then the cites would be stored in the array so
$citynames = Manchester
$citynames = Birmingham
$citynames = London