我有三个数组：源、目标和费用。我想收取特定来源和目的地的费用

Question

source = ["hyderabd","banglore","hyderabad","chennai","pune","mumbai"];destination = ["pune","chennai","mumbai","hyderabad","banglore","hyderabad"];prices = ["500","300","400","600","500","500"];我有源变量和目标变量：src="hyderabad" & des="mumbai"我想从价格数组中获得从海得拉巴到孟买的 400 的价格。我怎样才能得到这个？

Answer 1

您可以使用 foreach 循环执行此操作：

$source = ["hyderabd","banglore","hyderabad","chennai","pune","mumbai"];

$destination = ["pune","chennai","mumbai","hyderabad","banglore","hyderabad"];

$prices = ["500","300","400","600","500","500"];

foreach($prices as $key => $price) {

  // Array keys as string for source and destination.

  $srcToDest = $source[$key] . " -> " . $destination[$key];

  $charges[$srcToDest] = $price;

}

echo "<pre>"; print_r($charges);

输出将是：

Array

(

    [hyderabd -> pune] => 500

    [banglore -> chennai] => 300

    [hyderabad -> mumbai] => 400

    [chennai -> hyderabad] => 600

    [pune -> banglore] => 500

    [mumbai -> hyderabad] => 500

)

Answer 2

如果您可以控制来源、目的地和价格，您可能应该以不同的格式存储它们，而不是三个单独的数组。您可能可以这样存储：

$prices[$source][$destination] = $price;

因此，根据您的输入，这将变为：

$prices['hyderabad']['pune'] = 500;

$prices['hyderabad']['mumbai'] = 400;

$prices['banglore']['chennai'] = 300;

$prices['chennai']['hyderabad'] = 600;

$prices['pune']['banglore'] = 500;

$prices['mumbai']['hyderabad'] = 500;

Answer 3

你可以做这样的事情来找到一个元素的索引

echo $prices[array_search("hyderabad", $source)]; // 400

然而，这似乎相当随机。如果源条目和目标条目的索引与价格不同，会发生什么情况？来源和目的地与价格有何关系？你到底想在这里实现什么？

Answer 4

使用 array_column() 你得到你的结果

$all[]=$source = ["hyderabd","banglore","hyderabad","chennai","pune","mumbai"];

$all[]=$destination = ["pune","chennai","mumbai","hyderabad","banglore","hyderabad"];

$all[]=$prices = ["500","300","400","600","500","500"];

$search =   array_column($all, '2');

print_r($search);

?>

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