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  1. <?php
  2. error_reporting(- 1);
  3.  
  4. define('SUBWAY', 'sub');
  5. define('FOOT', 'foot');
  6. define('BUS', 'bus');
  7.  
  8. $transportName = array(
  9.     SUBWAY => 'едешь на метро',
  10.     FOOT => 'идешь пешком',
  11.     BUS => 'едешь на автобусе'
  12. );
  13.  
  14. $startPoint = 'pet'; // Петроградская
  15. $endPoint = 'nov'; // Новая Голландия
  16. $pathDone = [];
  17. $time = 0;
  18.  
  19. $pointNames = array(
  20.     'pet' => 'ст. м. Петроградская',
  21.     'chk' => 'ст. м. Чкаловская',
  22.     'gor' => 'ст. м. Горьковская',
  23.     'spo' => 'ст. м. Спортивная',
  24.     'vas' => 'ст. м. Василеостровская',
  25.     'kre' => 'Петропавловская крепость',
  26.     'let' => 'Летний сад',
  27.     'dvo' => 'Дворцовая площадь',
  28.     'isa' => 'Исакиевский собор',
  29.     'nov' => 'Новая Голландия',
  30.     'ras' => 'Дом Раскольникова',
  31.     'gos' => 'Гостиный Двор',
  32.     'sen' => 'Сенная Площадь',
  33.     'vla' => 'ст. м. Владимирская',
  34.     'vit' => 'Витебский вокзал',
  35.     'teh' => 'Технологический Институт'
  36. );
  37.  
  38. $paths = array(
  39.     'pet' => array(
  40.         'chk' => canGet(10, BUS),
  41.         'gor' => canGet(3, SUBWAY)
  42.     ),
  43.  
  44.     'chk' => array(
  45.         'pet' => canGet(10, BUS),
  46.         'spo' => canGet(3, SUBWAY)
  47.     ),
  48.  
  49.     'gor' => array(
  50.         'pet' => canGet(3, BUS),
  51.         'kre' => canGet(5, FOOT),
  52.         'gos' => canGet(6, SUBWAY)
  53.     ),
  54.  
  55.     'spo' => array(
  56.         'chk' => canGet(3, SUBWAY),
  57.         'vas' => canGet(10, BUS),
  58.         'sen' => canGet(7, SUBWAY)
  59.     ),
  60.  
  61.     'vas' => array(
  62.         'spo' => canGet(10, BUS),
  63.         'gos' => canGet(7, SUBWAY),
  64.         'nov' => canGet(11, FOOT)
  65.     ),
  66.  
  67.     'kre' => array(
  68.         'gor' => canGet(5, FOOT)
  69.     ),
  70.  
  71.     'let' => array(
  72.         'dvo' => canGet(6, FOOT),
  73.         'gos' => canGet(7, FOOT)
  74.     ),
  75.  
  76.     'dvo' => array(
  77.         'isa' => canGet(6, FOOT),
  78.         'gos' => canGet(6, FOOT),
  79.         'let' => canGet(6, FOOT)
  80.     ),
  81.  
  82.     'isa' => array(
  83.         'dvo' => canGet(6, FOOT),
  84.         'nov' => canGet(5, FOOT)
  85.     ),
  86.  
  87.     'nov' => array(
  88.         'vas' => canGet(11, FOOT),
  89.         'isa' => canGet(5, FOOT),
  90.         'ras' => canGet(7, BUS)
  91.     ),
  92.  
  93.     'ras' => array(
  94.         'nov' => canGet(7, BUS),
  95.         'sen' => canGet(3, FOOT)
  96.     ),
  97.  
  98.     'gos' => array(
  99.         'vas' => canGet(7, SUBWAY),
  100.         'sen' => canGet(3, SUBWAY),
  101.         'dvo' => canGet(6, FOOT),
  102.         'gor' => canGet(6, SUBWAY),
  103.         'let' => canGet(7, FOOT),
  104.         'vla' => canGet(7, FOOT)
  105.     ),
  106.  
  107.     'sen' => array(
  108.         'ras' => canGet(3, FOOT),
  109.         'spo' => canGet(7, SUBWAY),
  110.         'gos' => canGet(3, SUBWAY),
  111.         'vla' => canGet(4, SUBWAY),
  112.         'vit' => canGet(2, SUBWAY),
  113.         'teh' => canGet(3, SUBWAY)
  114.     ),
  115.  
  116.     'vla' => array(
  117.         'sen' => canGet(4, SUBWAY),
  118.         'gos' => canGet(7, FOOT),
  119.         'vit' => canGet(3, SUBWAY)
  120.     ),
  121.  
  122.     'vit' => array(
  123.         'sen' => canGet(2, SUBWAY),
  124.         'teh' => canGet(2, SUBWAY),
  125.         'vla' => canGet(3, SUBWAY)
  126.     ),
  127.  
  128.     'teh' => array(
  129.         'sen' => canGet(3, SUBWAY),
  130.         'vit' => canGet(2, SUBWAY)
  131.     ),
  132.     '' => array(
  133.         '' => canGet(0, SUBWAY)
  134.     )
  135. );
  136.  
  137. /*
  138.  * Чтобы не писать много раз array('time' => ..., 'by' => ...), используем функцию.
  139.  * «canGet» переводится как «можно попасть»
  140.  */
  141. function canGet($time, $byWhat)
  142. {
  143.     return array(
  144.         'time' => $time,
  145.         'by' => $byWhat
  146.     );
  147. }
  148.  
  149. function makeOneStep($paths, $time, $point, $target, $pathDone = [])
  150. {
  151.     $pathDone[] = $point;
  152.     if ($point == $target) {
  153.         $results['times'] = $time;
  154.         $results['paths'] = $pathDone;
  155.         return $results;
  156.     }
  157.     foreach ($paths[$point] as $station => $pathInfo) {
  158.         if (! in_array($station, $pathDone)) {
  159.             $time += $pathInfo['time'];
  160.             $point = $station;
  161.             return makeOneStep($paths, $time, $point, $target, $pathDone);
  162.         }
  163.     }
  164. }
  165.  
  166. $routes[] = makeOneStep($paths, $time, 'pet', 'nov');
  167. print_r($routes);
Success #stdin #stdout 0.02s 24400KB
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Array
(
    [0] => Array
        (
            [times] => 43
            [paths] => Array
                (
                    [0] => pet
                    [1] => chk
                    [2] => spo
                    [3] => vas
                    [4] => gos
                    [5] => sen
                    [6] => ras
                    [7] => nov
                )

        )

)
https://ideone.com/vlwG0X
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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