嗨，我有一个这样的对象数组
$json = json_decode($featureJson);
//which returns below
Array
(
[0] => stdClass Object
(
[productID] => 1
[productName] => Toyo
[assessments] => Array
(
[0] => stdClass Object
(
[answer] => Yes
)
[1] => stdClass Object
(
[answer] => Yes
)
...
)
)
[1] => stdClass Object
(
[productID] => 2
[productName] => Maze
[assessments] => Array
(
[0] => stdClass Object
(
[answer] => Yes
)
[1] => stdClass Object
(
[answer] => Yes
)
...
)
)
)
我还有另一个数组需要匹配 $json（对象数组）的 ID 并返回其产品名称。
$string = "1,2|2,1";
$IdArray = explode('|', $string);
$foo = '';
foreach ($IdArray as $item) {
$foo .= '{' . $item . '},';
}
echo $foo;
$foo返回{1,2},{2,1}，我匹配$json所以将显示 - {Toyo,Maze},{Maze,Toyo}，我该怎么做？我有一些使用 array_map（） 的提示
但仍然不知道在对象中匹配。
如果先分隔名称的数组会更容易。
<?php
$featureJson = '[{"productID":1,"productName":"Toyo","assessments":[{"answerswer":"Yes"},{"answerswer":"No"}]},{"productID":2,"productName":"Maze","assessments":[{"answerswer":"Yes"},{"answerswer":"Yes"}]}]';
$json = json_decode($featureJson);
// Make an array of names
$names = [];
foreach($json as $products){
$names[$products->productID] = $products->productName;
};
$string = "1,2|2,1";
$IdArray = explode('|', $string);
$foo = [];
foreach ($IdArray as $ids) {
$ids = explode(',',$ids);
$fooItem = [];
foreach($ids as $id){
$fooItem[] = $names[$id];
}
$foo[]= '{' . implode(',',$fooItem) . '}'; }
echo implode(',',$foo);
结果：
{Toyo,Maze},{Maze,Toyo}
在这里查看