php – 如何优化此数组循环

我有阵列,其中包含许多航班的信息.我只想要五个最低的价格.

首先,我按循环进行循环排序.

第二个我打印前五个阵列

但它需要更多时间..我怎样才能减少这个时间？

foreach ($flights_result->json_data['response']['itineraries'] as $key => $value)
{
    $mid[$key] = $value['price']['totalAmount'];
}

//Sort the data with mid descending
//Add $data as the last parameter,to sort by the common key
array_multisort($mid,SORT_ASC,$flights_result->json_data['response']['itineraries']);

// print 5 arrays
foreach ($flights_result->json_data['response']['itineraries'] as  $value)
{
    echo 'departureTime:' . $value['inboundInfo']['departureTime'] . '</br>';
    echo 'layoverInMin:' . $value['inboundInfo']['layoverInMin'] . '</br>';
    //      // loop echo 

    foreach ($value['inboundInfo']['flightNumbers'] as $flightNumbers)
    {
        echo 'flightNumbers  :' . $flightNumbers . '</br>';
    }

    echo 'durationInMin:' . $value['inboundInfo']['durationInMin'] . '</br>';
    echo 'localDepartureTimeStr:' . $value['inboundInfo']['localDepartureTimeStr'] . '</br>';
    echo ' arrivalTime:' . $value['inboundInfo']['arrivalTime'] . '</br>';
    echo ' numStops:' . $value['inboundInfo']['numStops'] . '</br>';

    ////     loop 
    foreach ($value[' inboundInfo']['flightClasses'] as $flightClasses)
    {
        echo 'flightClasses name :' . $flightClasses['name'] . '</br>';
        echo 'flightClasses fareClass :' . $flightClasses['fareClass'] . '</br>';
    }

    echo 'localArrivalTimeStr:' . $value['inboundInfo']['localArrivalTimeStr'] . '</br>';
    //      loop  echo

    foreach ($value[' carrier'] as $carrier)
    {
        echo 'carrier name :' . $carrier['name'] . '</br>';
        echo 'carrier code :' . $carrier['code'] . '</br>';
    }

    echo 'amount:' . $value['price']['amount'] . '</br>';
    echo ' totalAmount :' . $value['price']['totalAmount'] . '</br>';
    echo 'pricePerPassenger:' . $value['price']['pricePerPassenger'] . '</br>';
    echo 'currencyCode: ' . $value['price']['currencyCode'] . '</br>';
    echo 'totalPricePerPassenger: ' . $value['price']['totalPricePerPassenger'] . '</br>';
    echo 'includesTax: ' . $value['price ']['includesTax'] . '</br>';
    echo 'destinationCountryCode:' . $value[' destinationCountryCode'] . ' </br> -------- </br>';

    $count++;
    if ($count > 2)
    {
        break;
    }
}

数组示例

)

回答你的问题：

but it take more time..how to reduce this big time?

在减少之前,您需要确切地了解更多来自哪里.正如您在评论中所写,您正在使用远程请求来获取数据.

为数组排序您提供的数据非常快,因此我假设您不需要优化数组排序,而只需要从远程获取数据的方式和方式.一种方法是缓存它或预取它或进行并行处理.但到目前为止的细节根本不重要,除非你已经发现更多来自哪里,以便明确什么是大时间的责任所以可以考虑减少它.

希望到目前为止这是有用的,并随意添加缺少的信息到您的问题.

你可以在这里看到只有数组的代码,它真的很快：

> https://eval.in/51770

您可以在输出下方找到执行统计信息,示例来自：

OK (0.008 sec real,0.006 sec wall,14 MB,99 syscalls)

原文链接：https://www.f2er.com/php/137030.html

php – 如何优化此数组循环

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