public static function compare($stop1, $stop2) {
//first array element is the stop
//the "bus" element is the bus number
$stop1 = $stop1[0];
$stop2 = $stop2[0];
//NULL stop are at the end of time.
if(!$stop1) {
return 1;
}
if(!$stop2) {
return -1;
}
if($stop1->day != $stop2->day) {
return day::compare($stop1->day, $stop2->day);
}
if($stop1->hour != $stop2->hour) {
return $stop1->hour > $stop2->hour ? +1 : -1;
}
if($stop1->minute != $stop2->minute) {
return $stop1->minute > $stop2->minute ? +1 : -1;
}
return 0;
}
