這是我從函數中得到的數組結果。我想從數組中獲取 category_id 并且只回顯它。{"categories": [{"parent_id": 15397, "has_children": true, "category_id": 15402, "category_name": "AC"}, {"parent_id": 0, "has_children": true, "category_id": 15397, "category_name": "A"}], "request_id": "3beac0674e937d2471e4b66b5f998976"}在我 json_decode 我的結果之后，它顯示如下。stdClass Object ( [categories] => Array ( [0] => stdClass Object ( [parent_id] => 0 [has_children] => 1 [category_id] => 16 [category_name] => Women's Clothing ) [1] => stdClass Object ( [parent_id] => 16 [has_children] => 1 [category_id] => 1585 [category_name] => Dresses )有2個stdclass對象時如何訪問category_id//solved itforeach ($arr as $obj => $arr) { foreach ($arr as $obj => $arr) { print_r($arr->category_id); } }
2 回答
慕姐4208626
TA貢獻1852條經驗 獲得超7個贊
您實際上不需要在這里嵌套循環，因為第一級不是數組，而是對象。
$data = "{"categories": [{"parent_id": 15397, "has_children": true, "category_id": 15402, "category_name": "AC"}, {"parent_id": 0, "has_children": true, "category_id": 15397, "category_name": "A"}], "request_id": "3beac0674e937d2471e4b66b5f998976"}";
// Change to Array
$obj = json_decode($data, true);
// Get the data
foreach($obj['categories'] as $category) {
print_r($category['category_id']);
}
jeck貓
TA貢獻1909條經驗 獲得超7個贊
<?php
// Use this function to get the desired result, and then you can pass the result to another function
$data = '{"categories": [{"parent_id": 15397, "has_children": true, "category_id": 15402, "category_name": "AC"}, {"parent_id": 0, "has_children": true, "category_id": 15397, "category_name": "A"}], "request_id": "3beac0674e937d2471e4b66b5f998976"}';
function getCategoreIds($data=[]){
$cids=[];
$datas = json_decode($data,true);
if($datas['categories']){
foreach($datas['categories'] as $k=>$tmp){
if(isset($tmp['category_id'])){
$cids[] = $tmp['category_id'];
}
}
}
return $cids;
}
print_r(getCategoreIds($data));
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