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  1. <?php
  2. $hits = [
  3.     ['date' => new \DateTime('2019-01-02 12:00:00'), 'roundIndex' => 1],
  4.     ['date' => new \DateTime('2019-01-02 12:00:00'), 'roundIndex' => 4],
  5.     ['date' => new \DateTime('2019-01-02 12:00:00'), 'roundIndex' => 2],
  6.     ['date' => new \DateTime('2019-01-02 12:00:00'), 'roundIndex' => 1],
  7.     ['date' => new \DateTime('2019-01-01 12:00:00'), 'roundIndex' => 1],
  8.     ['date' => new \DateTime('2019-01-04 12:00:00'), 'roundIndex' => 4],
  9.     ['date' => new \DateTime('2019-01-02 12:00:00'), 'roundIndex' => 2],
  10.     ['date' => new \DateTime('2019-01-23 12:00:00'), 'roundIndex' => 1],
  11.     ['date' => new \DateTime('2019-01-22 12:00:00'), 'roundIndex' => 6],
  12.     ['date' => new \DateTime('2019-01-01 12:00:00'), 'roundIndex' => 3],
  13.     ['date' => new \DateTime('2019-01-06 12:00:00'), 'roundIndex' => 2],
  14.     ['date' => new \DateTime('2019-01-28 12:00:00'), 'roundIndex' => 7],
  15.     ['date' => new \DateTime('2019-01-26 12:00:00'), 'roundIndex' => 3],
  16.     ['date' => new \DateTime('2019-01-27 12:00:00'), 'roundIndex' => 5],
  17.     ['date' => new \DateTime('2019-01-26 12:00:00'), 'roundIndex' => 2],
  18.     ['date' => new \DateTime('2019-01-11 12:00:00'), 'roundIndex' => 4],
  19.     ['date' => new \DateTime('2019-01-24 12:00:00'), 'roundIndex' => 3],
  20.     ['date' => new \DateTime('2019-01-08 12:00:00'), 'roundIndex' => 7],
  21.     ['date' => new \DateTime('2019-01-11 12:00:00'), 'roundIndex' => 8],
  22.     ['date' => new \DateTime('2019-01-14 12:00:00'), 'roundIndex' => 6],
  23.     ['date' => new \DateTime('2019-01-13 12:00:00'), 'roundIndex' => 4],
  24.     ['date' => new \DateTime('2019-01-13 12:00:00'), 'roundIndex' => 5],
  25.     ['date' => new \DateTime('2019-01-24 12:00:00'), 'roundIndex' => 2],
  26.     ['date' => new \DateTime('2019-01-27 12:00:00'), 'roundIndex' => 4],
  27. ];
  28. usort($hits, static function(array $item1, array $item2) {
  29.     return $item1['date'] < $item2['date'] ? -1 : 1;
  30. });
  31.  
  32. // so far it works
  33.  
  34.  
  35. // now this screws up
  36. usort($hits, function($a,$b) use ($defaults) {
  37.     if (
  38.         $a['date']->format('Y-m-d H:i:s') === $b['date']->format('Y-m-d H:i:s'))
  39.     {
  40.         if ($a['roundIndex'] > $b['roundIndex'])
  41.         {
  42.             return 1;
  43.         }
  44.         else
  45.         {
  46.             return -1;
  47.         }
  48.     }
  49.     return 1;
  50. });
  51.  
  52. /* if you remove the sort() above and uncomment this manual sort, it will ALL work fine, but I dont know why....
  53. $sizeOfHits = sizeof($hits);
  54. for($i = 0; $i < $sizeOfHits; $i++)
  55. {
  56.     for($j = $i+1; $j < $sizeOfHits; $j++)
  57.     {
  58.         if (
  59.             $hits[$i]['date']->format('Y-m-d H:i:s') === $hits[$j]['date']->format('Y-m-d H:i:s'))
  60.         {
  61.             if ($hits[$i]['roundIndex'] > $hits[$j]['roundIndex'])
  62.             {
  63.                 $x = $hits[$j];
  64.                 $hits[$j] = $hits[$i];
  65.                 $hits[$i] = $x;
  66.             }
  67.         }
  68.     }
  69. }*/
  70.  
  71. foreach($hits as $hit) { echo $hit['date']->format('Y-m-d H:i:s').' '.$hit['roundIndex']."\r\n"; }
Success #stdin #stdout #stderr 0.02s 24880KB
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stdin
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Standard input is empty
stdout
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2019-01-08 12:00:00 7
2019-01-04 12:00:00 4
2019-01-06 12:00:00 2
2019-01-02 12:00:00 1
2019-01-02 12:00:00 1
2019-01-02 12:00:00 2
2019-01-02 12:00:00 2
2019-01-02 12:00:00 4
2019-01-11 12:00:00 4
2019-01-11 12:00:00 8
2019-01-27 12:00:00 4
2019-01-26 12:00:00 3
2019-01-24 12:00:00 2
2019-01-26 12:00:00 2
2019-01-23 12:00:00 1
2019-01-24 12:00:00 3
2019-01-22 12:00:00 6
2019-01-14 12:00:00 6
2019-01-13 12:00:00 4
2019-01-13 12:00:00 5
2019-01-01 12:00:00 3
2019-01-27 12:00:00 5
2019-01-28 12:00:00 7
2019-01-01 12:00:00 1
stderr
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PHP Notice:  Undefined variable: defaults in /home/a2jKzJ/prog.php on line 36
https://ideone.com/ZaV5Ar
language:
PHP (php 7.3.5)
created:
5 years ago
visibility:
public

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