position script

[darbyp]

hi, i have finally got my database set up for club timetrial results.

 

I have got the first round results being pulled out of the database like this

array(6) {
  ["round_num"]=>
  string(1) "1"
  ["round_date"]=>
  string(10) "2015-04-15"
  ["rider_firstname"]=>
  string(4) "firstname"
  ["rider_lastname"]=>
  string(10) "lastname"
  ["club_name"]=>
  string(14) "clubname"
  ["rider_time"]=>
  string( "00:22:03"
}
array(6) {
  ["round_num"]=>
  string(1) "1"
  ["round_date"]=>
  string(10) "2015-04-15"
  ["rider_firstname"]=>
  string(4) "firstname"
  ["rider_lastname"]=>
  string(7) "lastname"
  ["club_name"]=>
  string(9) "clubname"
  ["rider_time"]=>
  string( "00:22:11"
}
array(6) {
  ["round_num"]=>
  string(1) "1"
  ["round_date"]=>
  string(10) "2015-04-15"
  ["rider_firstname"]=>
  string(5) "firstname"
  ["rider_lastname"]=>
  string(7) "lastname"
  ["club_name"]=>
  string(14) "clubname"
  ["rider_time"]=>
  string( "00:22:21"
}

from a while($result = mysqli_fetch_assoc($query)) (if that is the best way of doing it)

 

Is there anyway of looping through them and assigning a position i.e. 1, 2 ,3, 4 etc and account for people who finish with the same time so will have to be the same number but then skip a few to get back on track?

 

Hope it makes sense

 

Thanks

Edited July 19, 2015 by darbyp

[scootstah]

Well, you could put an ORDER clause on your query. That way your results would already be ordered from least time -> most time, or vice versa.

 

SELECT ... ORDER BY rider_time

Edited July 19, 2015 by scootstah

[Barand]

You need keep track of the previous score and maintain a count. EG

$results = array(
                array ('name'=>'Peter', 'time'=>'00:20:30'),
                array ('name'=>'Paul', 'time'=>'00:22:12'),
                array ('name'=>'Ted', 'time'=>'00:21:42'),
                array ('name'=>'Ben', 'time'=>'00:23:04'),
                array ('name'=>'Tom', 'time'=>'00:21:42'),
                array ('name'=>'Hank', 'time'=>'00:24:36'),
                array ('name'=>'Fred', 'time'=>'00:21:42')
                );
// sort the results by time
uasort($results, function($a, $b) { return strcmp($a['time'], $b['time']); });

// display results showing the ranking positions

$prevtime = '00:00:00';
$count = 0;
$pos = 0;
foreach ($results as $rider) {
    ++$count;
    $pos = ($rider['time']==$prevtime) ? $pos : $count;
    $prevtime = $rider['time'];
    echo "$pos : {$rider['name']} ({$rider['time']})<br>";
}

/* output ******************

1 : Peter (00:20:30)
2 : Tom (00:21:42)
2 : Ted (00:21:42)
2 : Fred (00:21:42)
5 : Paul (00:22:12)
6 : Ben (00:23:04)
7 : Hank (00:24:36)

*/