// The database values we'll be inserting
mysql_insert('msg', array(
     'name' => $_GET['n'],
     'msg' => $_GET['m'],
     'ip' => $_SERVER['REMOTE_ADDR'],
     'last' => time(),
));

function mysql_insert($table, $inserts) {
   $values = array_map('mysql_real_escape_string', array_values($inserts));
   $keys = array_keys($inserts);

   return mysql_query('INSERT INTO `'.$table.'` (`'.implode('`,`', $keys).'`) VALUES (\''.implode('\',\'', $values).'\')');
}