我目前正致力于与Expedia API进行通信。 Expedia API的响应是一个4级深度的JSON数组。我可以通过以下方式访问这些值：例如。 $数据[＆＃39; HotelListResponse＆＃39;] [＆＃39; HotelList＆＃39;] [＆＃39; HotelSummary＆＃39;] [＆＃39; 0＆＃39;] [＆＃39; rateCurrencyCode＆＃39 ;] - 但是我有多个记录可供访问，我无法循环显示记录以显示所有酒店记录的列表。我已经尝试了各种不同的循环结果的方法，但我完全停留在这里，并没有找到任何关于如何在多级数组中循环更深层次的例子。
这是我对API的回应：
Array
(
[HotelListResponse] => Array
(
[customerSessionId] => 0ABAAAD6-0372-E191-4CB2-719DEDD9325E
[numberOfRoomsRequested] => 0
[moreResultsAvailable] =>
[HotelList] => Array
(
[@size] => 232
[@activePropertyCount] => 232
[HotelSummary] => Array
(
[0] => Array
(
[@order] => 0
[hotelId] => 382498
[name] => Georgetown Inn
[address1] => 6100 Corson Avenue
[city] => Seattle
[stateProvinceCode] => WA
[postalCode] => 98108
[countryCode] => US
[airportCode] => SEA
[propertyCategory] => 1
[hotelRating] => 2.5
[confidenceRating] => 52
[amenityMask] => 134234122
[locationDescription] => Near Boeing Plant 2
[shortDescription] => <p><b>Property Location</b> <br />With a stay at Georgetown Inn in Seattle, you'll be close to Boeing Plant 2 and Safeco Field. This hotel is within close proximity of Jefferson Park Golf Course and
[highRate] => 80.25
[lowRate] => 79.25
[rateCurrencyCode] => USD
[latitude] => 47.5478
[longitude] => -122.32137
[proximityDistance] => 11.007573
[proximityUnit] => MI
[hotelInDestination] => 1
[thumbNailUrl] => /hotels/5000000/4450000/4444400/4444333/4444333_86_t.jpg
[deepLink] => http://www.travelnow.com/templates/484006/hotels/382498/overview?lang=en¤cy=USD&standardCheckin=null/null/null&standardCheckout=null/null/null
)
[1] => Array
(
[@order] => 1
[hotelId] => 125727
[name] => Motif Seattle
[address1] => 1415 5th Ave
[city] => Seattle
[stateProvinceCode] => WA
[postalCode] => 98101
[countryCode] => US
[airportCode] => SEA
[propertyCategory] => 1
[hotelRating] => 4
[confidenceRating] => 52
[amenityMask] => 7798851
[locationDescription] => Near Pike Place Market
[shortDescription] => <p><b>Property Location</b> <br />With a stay at Motif Seattle, you'll be centrally located in Seattle, steps from 5th Avenue Theater and minutes from Pike Place Market. This 4-star hotel is within
[highRate] => 339
[lowRate] => 239
[rateCurrencyCode] => USD
[latitude] => 47.60985
[longitude] => -122.33475
[proximityDistance] => 11.168453
[proximityUnit] => MI
[hotelInDestination] => 1
[thumbNailUrl] => /hotels/1000000/60000/51000/50947/50947_264_t.jpg
[deepLink] => http://www.travelnow.com/templates/484006/hotels/125727/overview?lang=en¤cy=USD&standardCheckin=null/null/null&standardCheckout=null/null/null
)
[2] => Array
(
[@order] => 2
[hotelId] => 164122
[name] => The Westin Seattle
[address1] => 1900 5th Ave
[city] => Seattle
[stateProvinceCode] => WA
[postalCode] => 98101
[countryCode] => US
[airportCode] => SEA
[propertyCategory] => 1
[hotelRating] => 4
[confidenceRating] => 5
[amenityMask] => 7819587
[locationDescription] => Near Pike Place Market
[shortDescription] => <p><b>Property Location</b> <br />With a stay at The Westin Seattle, you'll be centrally located in Seattle, steps from Westlake Center and minutes from Pacific Place. This 4-star hotel is close to
[highRate] => 239
[lowRate] => 189
[rateCurrencyCode] => USD
[latitude] => 47.61309
[longitude] => -122.33788
[proximityDistance] => 11.335604
[proximityUnit] => MI
[hotelInDestination] => 1
[thumbNailUrl] => /hotels/1000000/20000/16700/16673/16673_301_t.jpg
[deepLink] => http://www.travelnow.com/templates/484006/hotels/164122/overview?lang=en¤cy=USD&standardCheckin=null/null/null&standardCheckout=null/null/null
)
[3] => Array
(
[@order] => 3
[hotelId] => 164116
[name] => Sheraton Seattle Hotel
[address1] => 1400 6th Ave
[city] => Seattle
[stateProvinceCode] => WA
[postalCode] => 98101
[countryCode] => US
[airportCode] => SEA
[propertyCategory] => 1
[hotelRating] => 4
[confidenceRating] => 30
[amenityMask] => 278595
[locationDescription] => Near Pike Place Market
[shortDescription] => <p><b>Property Location</b> <br />With a stay at Sheraton Seattle Hotel, you'll be centrally located in Seattle, steps from 5th Avenue Theater and Washington State Convention Center. This 4-star
[highRate] => 450
[lowRate] => 295
[rateCurrencyCode] => USD
[latitude] => 47.61017
[longitude] => -122.33357
[proximityDistance] => 11.115907
[proximityUnit] => MI
[hotelInDestination] => 1
[thumbNailUrl] => /hotels/1000000/30000/25300/25290/25290_88_t.jpg
[deepLink] => http://www.travelnow.com/templates/484006/hotels/164116/overview?lang=en¤cy=USD&standardCheckin=null/null/null&standardCheckout=null/null/null
) ......
我正在尝试循环并显示数组中[0] [1] [2] [3]级别的值。任何人都可以帮我提供有关如何编写foreach循环的信息吗？
答案 0 :(得分：0)
试
foreach ($data['HotelListResponse']['HotelList']['HotelSummary'] as $i=>$a) {
echo $a['rateCurrencyCode'];
}
答案 1 :(得分：0)
你需要实现递归函数：
function doLoop($foo) {
if (is_array($foo)) {
foreach ($foo as $bar) {
doLoop($bar);
}
} else {
/* do your staff with $foo */
}
}
doLoop($foo);