显示此数组结果的最佳方式是什么

Question

我有一个多维数组

array(
    "Airportbus"=>array(
                       "NO"=>array(
                                  "from"=>"Barcelona",
                                  "to"=>"Gerona"
                                  )
                       ),
    "flight"=>array(
                    "SK455"=>array(
                                 "from"=>"Gerona",
                                  "to"=>"Stockholm",
                                  "seat"=>"3A"
                               ),
                    "SK22"=>array(
                                "from"=>"Stockholm",
                                 "to"=>"New york",
                                 "gate"=>"Gate 22",
                                 "description"=>"Baggage wiil be transfered from your last leg",
                                 "seat"=>"7B"
                               )
                  ),
  "train"=>array(
                  "78A"=>array(
                                "from"=>"Madrid",
                                 "to"=>"Barcelona",
                                 "seat"=>"45B"
                               )
                )
           );

我想打印这样的结果。

1. Take train 78A from Madrid to Barcelona. Sit in seat 45B. 
2. Take the airport bus from Barcelona to Gerona Airport. No seat assignment. 
3. From Gerona Airport, take flight SK455 to Stockholm. Gate 45B, seat 3A. Baggage drop at ticket counter 344.
4. From Stockholm, take flight SK22 to New York JFK. Gate 22, seat 7B. Baggage will we automatically transferred from your last leg.

这里的问题是

1.一些数组有更多的元素，不同的键"gate","description"。 2.一些额外的文字被打印在结果中，“Sit in”，“Take”。

我尝试用

打印结果

$message = "";


if(issset($result['key']))
{
  $message += " some text ".$result['key']. " some text ",
}
if(issset($result['key2']))
{
  $message += " some text ".$result['key2']. " some text ",
}
if(issset($result['key2']))
{
  $message += " some text ".$result['key2']. " some text ",
}

我认为 if 效率低下，因为每次添加新数组键时我都必须添加更多代码。

在这种情况下有没有更好的办法，请帮忙。在此先感谢:)

Answer 1

我希望这个毛边草图能带你到某个地方

$out='';
foreach($resut as $k=>$v){
if($k=='Airportbus'){
//process bus
}

if($k=='Train'){
//process train
foreach($v as $kk=>$vv){

$trainid=$kk;
$from=$v[$kk]['from'];
$to=$v[$kk]['to'];
$seat=$v[$kk]['seat'];
$out .='you sit in.'$seat.' from '.$from.' to '.$to.' on train: '.$trainid;                               
}
}

} 

替代创建函数：

function train($data){
 foreach($data as $kk=>$vv){

    $trainid=$kk;
    $from=$v[$kk]['from'];
    $to=$v[$kk]['to'];
    $seat=$v[$kk]['seat'];
    $out .='you sit in.'$seat.' from '.$from.' to '.$to;                               
    }

return $out;

}

Answer 2

这也可能满足您的需求（至少足够接近）：

$transport_data = YOUR_DATA;

$count = 1;
foreach ($transport_data as $transport_type => $transports) {
    foreach($transports as $transport_id => $transport_details) {
        echo $count . "." . " Take " . $transport_type . " " . $transport_id . " ";
        echo "from " . $transport_details['from'] . " to " . $transport_details['to'] . ". ";

        echo "Seating is ";
        if(array_key_exists('seat', $transport_details)) { // if seat exists, display it
            echo "Seat " . $transport_details['seat'] . ". ";
        } else {
            echo "not assigned. ";
        }

        echo "Gate is ";
        if(array_key_exists('gate', $transport_details)) { // if gate exists, display it
            echo $transport_details['gate'] . ". ";
        } else {
            echo "not assigned. ";
        }

        if(array_key_exists('description', $transport_details)) { // if description exists, display it
            echo $transport_details['description'] . ". ";
        } 
        echo  "\n";
        $count = $count + 1;
    }
}

输出：

1. Take Airportbus NO from Barcelona to Gerona. Seating is not assigned. Gate is not assigned. 
2. Take flight SK455 from Gerona to Stockholm. Seating is Seat 3A. Gate is not assigned. 
3. Take flight SK22 from Stockholm to New york. Seating is Seat 7B. Gate is Gate 22. Baggage wiil be transfered from your last leg. 
4. Take train 78A from Madrid to Barcelona. Seating is Seat 45B. Gate is not assigned.  

Answer 3

我的程序解决方案没有验证或 cmets：

<?php

function printDefaultTransportation($properties) {
    $type = $properties['type'];
    $from = $properties['from'];
    $to   = $properties['to'];
    $id   = isset($properties['id']) ? $properties['id'] : null;
    $seat = isset($properties['seat']) ? $properties['seat'] : null;

    echo "Take $type";
    if( $id !== null ) {
        echo " $id";
    }
    echo " from $from to $to.";
    echo isset($seat) ? " Sit in $seat." : ' No seat assignment.';
}

function printAirportTransportation($properties) {
    $id   = $properties['id'];
    $from = $properties['from'];
    $to   = $properties['to'];
    $seat = isset($properties['seat']) ? $properties['seat'] : null;
    $gate = isset($properties['gate']) ? $properties['gate'] : null;
    $description = isset($properties['description']) ? $properties['description'] : null;

    echo "From $from Airport, take flight $id to $to.";
    if( $gate !== null ) {
        echo " $gate";
        if( $seat !== null ) {
            echo ", seat $seat";
        }
        echo '.';
    } else if( $seat !== null ) {
        echo " Seat $seat.";
    }
    if( $description !== null ) {
        echo " $description.";
    }
}

function printTransportation($type, $id, $extra) {
    static $functionsTypesMap = ['train'      => 'printDefaultTransportation',
                                 'airportbus' => 'printDefaultTransportation',
                                 'flight'     => 'printAirportTransportation'];

    $properties = array_merge(['type' => $type, 'id' => $id], $extra);
    call_user_func($functionsTypesMap[$type], $properties);
}

function printTransportations(array $transportations) {
    foreach($transportations as $k => $v) {
        $transportations[strtolower($k)] = $v;
    }

    $i = 1;
    static $orderedTypes = ['train', 'airportbus', 'flight'];
    foreach($orderedTypes as $type) {
        if( !isset($transportations[$type]) ) {
            continue;
        }

        foreach($transportations[$type] as $id => $properties) {
            if( $i > 1 ) {
                echo "\n";
            }
            echo "$i. ";
            printTransportation($type,
                                (strtolower($id)==='no'? null : $id),
                                $properties);
            ++$i;
        }
    }
}

$arr = ["Airportbus" => ["NO" => ["from" => "Barcelona",
                                  "to"   => "Gerona"]],
        "flight"     => ["SK455" => ["from" => "Gerona",
                                     "to"   => "Stockholm",
                                     "seat" => "3A"],
                         "SK22"  => ["from" => "Stockholm",
                                     "to"   => "New york",
                                     "gate" => "Gate 22",
                                     "description" => "Baggage wiil be transfered from your last leg",
                                     "seat" => "7B"]],
        "train"      => ["78A" => ["from" => "Madrid",
                                   "to"   => "Barcelona",
                                   "seat" => "45B"]]
];

printTransportations($arr);

输出是：

1.从马德里乘坐78A火车到巴塞罗那。坐在45B。 2. 从巴塞罗那乘坐机场巴士前往赫罗纳。没有座位分配。 3. 从赫罗纳机场乘坐 SK455 航班前往斯德哥尔摩。座位 3A。 4. 从斯德哥尔摩机场乘坐 SK22 航班前往纽约。 22 号登机口，座位 7B。行李将从您的最后一站转移。

评论：

• “flight SK455”缺少门，因为输入没有它。
• “New York”输出为“New york”（来自数组值）。
• 我认为，您应该使用类，而不是使用数组。