Maximum of occurrences of an item

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Maximum of occurrences of an item

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#1 by (2 votes)

-1

I need to go through the data and find out the maximum number of occurrences of an item. I have the following structure

array(5) {
    [0]=>
     object(stdClass)#26 (6) {
      ["num_dia"] => string(1) "5"
      ["num_semana"] => string(2) "46"
      ["descricao"] => string(5) "Teste"
     }
    [1]=>
     object(stdClass)#27 (6) {
      ["num_dia"]=> string(1) "5"
      ["num_semana"]=>string(2) "46"
      ["descricao"]=>string(8) "Testeeee"
   }
    [2]=>
     object(stdClass)#28 (6) {
      ["num_dia"]=>string(1) "6"
      ["num_semana"]=>string(2) "46"
      ["descricao"]=>string(5) "Teste"
   }
    [3]=>
     object(stdClass)#29 (6) {
      ["num_dia"]=>string(1) "6"
      ["num_semana"]=>string(2) "47"
      ["descricao"]=>string(7) "Teste 1"
   }
   [4]=>
     object(stdClass)#30 (6) {
      ["num_dia"]=>string(1) "5"
      ["num_semana"]=>string(2) "48"
      ["descricao"]=>string(7) "Bla bla"
    }
}

I did this right now.

   $count = 0;
    $ativ_max = [];
    $atual_max = 0;
    $antigo_max = 0;

            for ($i=0; $i < count($ativ_semanal); $i++) {
        for ($j=0; $j < count($ativ_semanal[$i]->num_semana); $j++) {
            if ($i == 0|| $ativ_semanal[$i]->num_semana == $ativ_semanal[$i-1]->num_semana) {
                if ($i == 0 || $ativ_semanal[$i]->num_dia == $ativ_semanal[$i-1]->num_dia) {
                    $atual_max++;
                }else{
                    if ($antigo_max < $atual_max) {
                        $antigo_max = $atual_max;
                        if ($i == count($ativ_semanal[$i]->num_semana)) {
                            $ativ_max = array($ativ_semanal[$i]->num_semana => $antigo_max);
                        }
                    }
                    $atual_max = 1;
                }
            }else{
                var_dump($antigo_max);
                $ativ_max = array($ativ_semanal[$i]->num_semana => $antigo_max);
                $atual_max=1;
            }
        }
    }

He is creating the associative array

print_r($item); // Array ( [46] => 3 [47] => 1 [48] => 1 )

But only the first one is right ( índice 46 ), the second is adding +1 to 2 índice 46 , it should be 2 and not 3 . Since the maximum number of items was on the 5 day, and there were 2 items.

php codeigniter

asked by anonymous 16.11.2018 / 17:32

1 answer

Configuration of environment variables - Commands do not work - Ionic Create a function that reads a list correctly

score 2 · Accepted Answer

$itens = [];
foreach ($ativ_semanal as $ativ) {
    if (array_key_exists($ativ->num_semana, $itens)) {
        $itens[$ativ->num_semana]++;
    } else {
        $itens[$ativ->num_semana] = 1;
    }
}

Is that what you're trying to do? Because it seems this is what you want as output, but that does not match your question. In your question you say that you want to count the number of items (what is defined by the description), but at the output you apparently do not care about the type, just the quantity of items in a given week.