Количество значений на основе нескольких значений ключа в php

Question

У меня есть result array в php. Я хочу подсчитать значения на основе нескольких ключевых значений. Например:

Я хочу, чтобы посчитать весь отъезд, который принадлежит «fromcity» => Лахор и «tocity» => Сахивале

А также же все остальное fromcity и tocity отсчитывает вылет.

Как группа по заявлению.

Просьба помочь мне в этом.

У меня есть следующий результирующий массив в PHP:

$result_array = array 
    (
     [0] => array 
      (
       "id" => "348", 
       "departure" => "00:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Buhawalpur" 
      ) 

     [1] => array 
      (
       "id" => "531", 
       "departure" => "00:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Murree" 
      ) 

     [2] => array 
      (
       "id" => "532", 
       "departure" => "00:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Rawalpindi" 
      ) 

     [3] => array 
      (
       "id" => "581", 
       "departure" => "00:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Multan" 
      ) 

     [4] => array 
      (
       "id" => "582", 
       "departure" => "00:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Sahiwal" 
      ) 

     [5] => array 
      (
       "id" => "528", 
       "departure" => "00:05:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Sahiwal" 
      ) 

     [6] => array 
      (
       "id" => "1584", 
       "departure" => "00:15:00", 
       "fromcity]" => "Lahore", 
       "tocity]"=> "Multan" 
      ) 

     [7] => array 
      (
       "id" => "1586", 
       "departure" => "00:15:00", 
       "fromcity"=> "Lahore", 
       "tocity" => "Sahiwal" 
      ) 

     [8] => array 
      (
       "id" => "349", 
       "departure" => "01:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Multan" 
      ) 

     [9] => array 
      (
       "id" => "529", 
       "departure" => "01:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Sahiwal" 
      ) 

     [10] => array 
      (
       "id" => "906", 
       "departure" => "01:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Rawalpindi" 
      ) 

     [11] => array 
      (
       "id" => "685", 
       "departure" => "01:45:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Rawalpindi" 
      ) 

     [12] => array 
      (
       "id" => "350", 
       "departure" => "02:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Multan" 
      ) 

     [13] => array 
      (
       "id" => "530", 
       "departure" => "02:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Sahiwal" 
      ) 

     [14] => array 
      (
       "id" => "907", 
       "departure" => "02:30:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Rawalpindi" 
      ) 

     [15] => array 
      (
       "id" => "736", 
       "departure" => "03:15:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Sahiwal" 
      ) 

     [16] => array 
      (
       "id" => "908", 
       "departure" => "05:30:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Rawalpindi" 
      ) 

     [17] => array 
      (
       "id" => "1649", 
       "departure" => "05:30:00", 
       "fromcity"=> "Lahore", 
       "tocity" => "Faislabad" 
      ) 

     [18] => array 
      (
       "id" => "331", 
       "departure" => "06:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Multan" 
      ) 

     [19] => array 
      (
       "id" => "438", 
       "departure" => "06:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Sialkot" 
      ) 

     [20] => array 
      (
       "id" => "447", 
       "departure" => "06:00:00", 
       "fromcity" => "Lahore", 
       "tocity" => "Daska" 
      ) 

    ) 

Answer 1

Вы должны осуществить это самостоятельно. Просто итерация по $result_array и посчитать, что вам нужно:

$counter = 0; 
foreach($result_array as $item) { 
    if($item['fromcity'] == 'Lahore' and $item['tocity'] == 'Sahiwal') { 
    $counter++; 
    } 
} 

echo "My current count is " . $counter; 

Вы, вероятно, хотите implment функции подсчета, которая будет просто вернуть счетчик.

Answer 2

Если вы хотите, чтобы группа, основанная на fromcity и tocity, вы можете сделать следующее:

$count = []; 
foreach($result_array as $element) { 
    $search = $element['fromcity']. '-'. $element['tocity']; 
    if(!isset($count[$search])) { 
     $count[$search] = 1; 
    } else { 
     $count[$search] += 1; 
    } 
} 

//Result: 
foreach($count as $name => $cnt) { 
echo $name.' - '. $cnt .PHP_EOL; 
} 

Edit: теперь он должен работать правильно.