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  1. <?php
  2.  
  3. define('SUBWAY', 'sub');
  4. define('FOOT', 'foot');
  5. define('BUS', 'bus');
  6.  
  7. $transportName = array(
  8.     SUBWAY => 'едешь на метро',
  9.     FOOT => 'идешь пешком',
  10.     BUS => 'едешь на автобусе'
  11. );
  12.  
  13. $startPoint = 'pet'; // Петроградская
  14. $endPoint = 'nov'; // Новая Голландия
  15.  
  16. $pointNames = array(
  17.     'pet' => 'ст. м. Петроградская',
  18.     'chk' => 'ст. м. Чкаловская',
  19.     'gor' => 'ст. м. Горьковская',
  20.     'spo' => 'ст. м. Спортивная',
  21.     'vas' => 'ст. м. Василеостровская',
  22.     'kre' => 'Петропавловская крепость',
  23.     'let' => 'Летний сад',
  24.     'dvo' => 'Дворцовая площадь',
  25.     'isa' => 'Исакиевский собор',
  26.     'nov' => 'Новая Голландия',
  27.     'ras' => 'Дом Раскольникова',
  28.     'gos' => 'Гостиный Двор',
  29.     'sen' => 'Сенная Площадь',
  30.     'vla' => 'ст. м. Владимирская',
  31.     'vit' => 'Витебский вокзал',
  32.     'teh' => 'Технологический Институт'
  33. );
  34.  
  35. $paths = array(
  36.     'pet' => array(
  37.         'chk' => canGet(10, BUS),
  38.         'gor' => canGet(3, SUBWAY)
  39.     ),
  40.     'chk' => array(
  41.         'pet' => canGet(10, BUS),
  42.         'spo' => canGet(3, SUBWAY)
  43.     ),
  44.     'gor' => array(
  45.         'pet' => canGet(3, BUS),
  46.         'kre' => canGet(5, FOOT),
  47.         'gos' => canGet(6, SUBWAY)
  48.     ),
  49.     'spo' => array(
  50.         'chk' => canGet(3, SUBWAY),
  51.         'vas' => canGet(10, BUS),
  52.         'sen' => canGet(7, SUBWAY)
  53.     ),
  54.     'vas' => array(
  55.         'spo' => canGet(10, BUS),
  56.         'gos' => canGet(7, SUBWAY),
  57.         'nov' => canGet(11, FOOT)
  58.     ),
  59.     'kre' => array(
  60.         'gor' => canGet(5, FOOT)
  61.     ),
  62.     'let' => array(
  63.         'dvo' => canGet(6, FOOT),
  64.         'gos' => canGet(7, FOOT)
  65.     ),
  66.     'dvo' => array(
  67.         'isa' => canGet(6, FOOT),
  68.         'gos' => canGet(6, FOOT),
  69.         'let' => canGet(6, FOOT)
  70.     ),
  71.     'isa' => array(
  72.         'dvo' => canGet(6, FOOT),
  73.         'nov' => canGet(5, FOOT)
  74.     ),
  75.     'nov' => array(
  76.         'vas' => canGet(11, FOOT),
  77.         'isa' => canGet(5, FOOT),
  78.         'ras' => canGet(7, BUS)
  79.     ),
  80.     'ras' => array(
  81.         'nov' => canGet(7, BUS),
  82.         'sen' => canGet(3, FOOT)
  83.     ),
  84.     'gos' => array(
  85.         'vas' => canGet(7, SUBWAY),
  86.         'sen' => canGet(3, SUBWAY),
  87.         'dvo' => canGet(6, FOOT),
  88.         'gor' => canGet(6, SUBWAY),
  89.         'let' => canGet(7, FOOT),
  90.         'vla' => canGet(7, FOOT)
  91.     ),
  92.     'sen' => array(
  93.         'ras' => canGet(3, FOOT),
  94.         'spo' => canGet(7, SUBWAY),
  95.         'gos' => canGet(3, SUBWAY),
  96.         'vla' => canGet(4, SUBWAY),
  97.         'vit' => canGet(2, SUBWAY),
  98.         'teh' => canGet(3, SUBWAY)
  99.     ),
  100.     'vla' => array(
  101.         'sen' => canGet(4, SUBWAY),
  102.         'gos' => canGet(7, FOOT),
  103.         'vit' => canGet(3, SUBWAY)
  104.     ),
  105.     'vit' => array(
  106.         'sen' => canGet(2, SUBWAY),
  107.         'teh' => canGet(2, SUBWAY),
  108.         'vla' => canGet(3, SUBWAY)
  109.     ),
  110.     'teh' => array(
  111.         'sen' => canGet(3, SUBWAY),
  112.         'vit' => canGet(2, SUBWAY)
  113.     )
  114. );
  115.  
  116. // Чтобы не писать много раз array('time' => ..., 'by' => ...), используем функцию. 
  117.  
  118. function canGet($time, $byWhat) {
  119.     return array('time' => $time, 'by' => $byWhat);
  120. }
  121.  
  122. function makeOneStep($paths, $pathDone, $time, $point, $target) {
  123.     $result = ['time', 'path'];
  124.     foreach ($paths[$point] as $path => $value) {
  125.         if ($path == $target) {
  126.             array_push($pathDone, $path);
  127.             $result['path'] = $pathDone;
  128.             $result['time'] = $time + $value['time'];
  129.             return $result;
  130.         }
  131.     }
  132.     foreach ($paths[$point] as $path => $value) {
  133.         if (in_array($path, $pathDone)) {
  134.             continue;
  135.         }
  136.         array_push($pathDone, $path);
  137.         $time += $value['time'];
  138.         $point = $path;
  139.         return makeOneStep($paths, $pathDone, $time, $point, $target);
  140.     }
  141. }
  142.  
  143. $pathDone = array('pet');
  144. $time = 0;
  145. $point = 'pet';
  146. $target = 'nov';
  147.  
  148. $result = makeOneStep($paths, $pathDone, $time, $point, $target);
  149.  
  150. print_r($result['path']);
  151.  
Success #stdin #stdout 0.02s 52472KB
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Standard input is empty
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Array
(
    [0] => pet
    [1] => chk
    [2] => spo
    [3] => vas
    [4] => nov
)
https://ideone.com/B2v34m
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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