我如何获得数组中键的值？
该数组由google shopping api完成，即：
// Valid source values are "public", "cx:cse", and "gan:pid"
// See http://code.google.com/apis/shopping/search/v1/getting_started.html#products-feed
$source = "public";
// For more information about full text search with the shopping API, please
// see http://code.google.com/apis/shopping/search/v1/getting_started.html#text-search
$query = "\"mp3 player\" | ipod";
//The order in which the API returns products is defined by a ranking criterion.
// See http://code.google.com/apis/shopping/search/v1/getting_started.html#ranking
$ranking = "relevancy";
$results = $service->products->listProducts($source, array(
"country" => "UK",
"q" => $query,
"rankBy" => $ranking,
));
print "<h1>Shopping Results</h1><pre>" . print_r($results, true) . "</pre>";
我有以下数组输出： 购物结果
Array
(
[kind] => shopping#products
[etag] => "*********"
[id] => tag:google.com,2010:shopping/products
[selfLink] => https://www.googleapis.com/shopping/search/v1/public/products?country=UK&q=iphone&rankBy=relevancy
[nextLink] => https://www.googleapis.com/shopping/search/v1/public/products?country=UK&q=iphone&rankBy=relevancy&startIndex=26
[totalItems] => 771622
[startIndex] => 1
[itemsPerPage] => 25
[currentItemCount] => 25
[requestId] => 0CMjH976CqbECFYNWtAodLRwAAA
[items] => Array
(
[0] => Array
(
[kind] => shopping#product
[id] => tag:google.com,2010:shopping/products/5735617/11254757413841304510
[selfLink] => https://www.googleapis.com/shopping/search/v1/public/products/5735617/gid/11254757413841304510
[product] => Array
(
[googleId] => 11254757413841304510
[author] => Array
(
[name] => Amazon.co.uk
[accountId] => 5735617
)
[creationTime] => 2012-05-04T05:03:50.000Z
[modificationTime] => 2012-07-20T02:02:16.000Z
[country] => GB
[language] => en
[title] => Apple iPod touch 8GB - Black - 4th Generation (Latest Model - Launched Sept 2010)
[description] => Apple iPod touch 8GB - Black - 4th Generation (Latest Model - Launched Sept 2010)
[link] => http://www.amazon.co.uk/dp/B0040GIZTI/ref=asc_df_B0040GIZTI8843997?smid=A1YZ4RXO7GUOYN&tag=googlecouk06-21&linkCode=asn&creative=22218&creativeASIN=B0040GIZTI
[brand] => Apple
[condition] => new
[gtin] => 00885909394739
[gtins] => Array
(
[0] => 00885909394739
)
[mpns] => Array
(
[0] => MC540BT/A
)
[inventories] => Array
(
[0] => Array
(
[channel] => online
[availability] => inStock
[price] => 135.95
[shipping] => 1.99
[currency] => GBP
)
)
[images] => Array
(
[0] => Array
(
[link] => http://ecx.images-amazon.com/images/I/41p2rNmazRL.jpg
[status] => available
)
)
)
)
[1] => Array
(
[kind] => shopping#product
[id] => tag:google.com,2010:shopping/products/5735617/4597224105326146239
[selfLink] => https://www.googleapis.com/shopping/search/v1/public/products/5735617/gid/4597224105326146239
[product] => Array
(
[googleId] => 4597224105326146239
[author] => Array
(
[name] => Amazon.co.uk
[accountId] => 5735617
)
[creationTime] => 2012-05-04T05:03:50.000Z
[modificationTime] => 2012-07-20T02:02:16.000Z
[country] => GB
[language] => en
[title] => SanDisk Sansa Clip+ 8GB MP3 Player with Radio and Expandable MicroSD/SDHC Slot - Black
[description] => 8 GB memory Digital FM-tuner with 40 preset radio stations Extendable microSD/microSDHC card slot
[link] => http://www.amazon.co.uk/dp/B002NX0ME6/ref=asc_df_B002NX0ME68843997?smid=A3P5ROKL5A1OLE&tag=googlecouk06-21&linkCode=asn&creative=22206&creativeASIN=B002NX0ME6
[brand] => SanDisk
[condition] => new
[gtin] => 00619659059989
[gtins] => Array
(
[0] => 00619659059989
)
[mpns] => Array
(
[0] => SDMX18-008G-E46K
)
[inventories] => Array
(
[0] => Array
(
[channel] => online
[availability] => inStock
[price] => 46.95
[shipping] => 0
[currency] => GBP
)
)
[images] => Array
(
[0] => Array
(
[link] => http://ecx.images-amazon.com/images/I/419U6bYDF1L.jpg
[status] => available
)
)
)
)
我不需要所有这些数据，我只需要3-4个按键，但我如何访问它们？我如何回应每个数组中的[title]值？
答案 0 :(得分：0)
这应该有效：
foreach( $results as $result)
foreach( $result['product'] as $product)
echo $product['title'];
答案 1 :(得分：0)
您可以像上面指出的那样遍历数组，也可以像这样使用array_walk_recursive：
$title_array = array();
array_walk_recursive($input_array, 'find_titles');
function find_titles($value, $key) {
global $title_array;
if ($key == 'title') {
$title_array[] = $value;
}
}
如果您不确定输入数组的结构将是什么（即您要查找的键的深度是多少级嵌套），这可能是更好的解决方案。
答案 2 :(得分：0)
在$ results中输出每个产品的标题：
foreach ($results as $result) {
echo $result['product']['title'];
}
答案 3 :(得分：0)
工作示例
<?php
$a = array("hai", array("ha"=>1, "hai"=>2, array("a"=>1, "b"=>2)));
function test($item, $key)
{
echo "$key holds $item\n";
}
array_walk_recursive($a, 'test');
0 holds hai
ha holds 1
hai holds 2
a holds 1
b holds 2
如果您只对标题感兴趣
考虑使用foreach
foreach($results['item'] as $result) {
echo $result['product']['title'];
}