Problems sorting an array

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Problems sorting an array

Asked 9 years, 3 months ago

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I have an array of objects:

$arrayTeste[] = array(
    "horario" =>$arr[$i]['horario'],
    "valor" =>$valorSoma,
    "nome" =>$arr[$i]['nome']
);

The schedule was all cluttered, so I ordered using the Sort function().

sort($arrayTeste);

That is the result:

10:00:00 - 11:00:00 | 2

11:00:00 - 12:00:00 | 7

12:00:00 - 13:00:00 | 0

13:00:00 - 14:00:00 | 0

14:00:00 - 15:00:00 | 4

15:00:00 - 16:00:00 | 0

16:00:00 - 17:00:00 | 0

17:00:00 - 18:00:00 | 0

18:00:00 - 19:00:00 | 0

19:00:00 - 20:00:00 | 0

20:00:00 - 21:00:00 | 0

8:00:00 - 9:00:00 | 0

9:00:00 - 10:00:00 | 0

he ordered, but the problem is the schedules 8:00:00 - 9:00:00 and 9:00:00 - 10:00:00, it’s probably because there’s no number 0 in front of them, for example: 09:00:00; 08:00. would this be the reason? to specifically order the time, I must do differently from what I did on Sort()?

1

I noticed that you’ve been asking some questions lately @chocolatemontana, but you haven’t registered for Stack Overflow. I think it’s important that you register and participate more actively in the community. Make a [tour] and see what the community proposal and do not forget to mark the answers that solve your question as accepted answer.

– gmsantos

2015/07/27 at 21:46
The problem is that you are ordering strings and not numbers... I believe the most ideal for this case is the function usort or convert all times to a timestamp (using the same day for all) so that sorting can be done using integer numbers.

– Oeslei

2015/07/28 at 13:48

1 answer

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by gmsantos • **17,221** points · Answer 1 · 2015-07-27T21:42:26+00:00

Instead of sort(), use the natsort(). Of documentation:

This function is an implementation of the algorithm that sorts alphanumeric strings in the way a human would maintain key/value association. This is called "natural ordination". An example of the difference between this algorithm and the algorithm with which the computer sorts strings (used in Sort()).

Example:

<?php

$datas = array(
'10:00:00 - 11:00:00',
'11:00:00 - 12:00:00',
'12:00:00 - 13:00:00',
'13:00:00 - 14:00:00',
'8:00:00 - 9:00:00',
'9:00:00 - 10:00:00',
);

var_dump($datas);

natsort($datas);

var_dump($datas);

Exit: Before (first vardump)

array(6) {
  [0]=>
  string(19) "10:00:00 - 11:00:00"
  [1]=>
  string(19) "11:00:00 - 12:00:00"
  [2]=>
  string(19) "12:00:00 - 13:00:00"
  [3]=>
  string(19) "13:00:00 - 14:00:00"
  [4]=>
  string(17) "8:00:00 - 9:00:00"
  [5]=>
  string(18) "9:00:00 - 10:00:00"
}

Then (second vardump)

array(6) {
  [4]=>
  string(17) "8:00:00 - 9:00:00"
  [5]=>
  string(18) "9:00:00 - 10:00:00"
  [0]=>
  string(19) "10:00:00 - 11:00:00"
  [1]=>
  string(19) "11:00:00 - 12:00:00"
  [2]=>
  string(19) "12:00:00 - 13:00:00"
  [3]=>
  string(19) "13:00:00 - 14:00:00"
}