【发布时间】：2021-12-24 14:37:44
【问题描述】：
我有这个数组：
stdClass Object
(
[categories] => Array
(
[0] => stdClass Object
(
[id] => 330
[label] => Electrocasnice Mici
[children] => Array
(
[0] => stdClass Object
(
[id] => 335
[label] => Aspiratoare
)
[1] => stdClass Object
(
[id] => 374
[label] => Aparate pentru bucatarie
[children] => Array
(
[0] => stdClass Object
(
[id] => 373
[label] => Masini de tocat
[children] => Array
(
[0] => stdClass Object
(
[id] => 1153
[label] => Accesorii masini de tocat
)
)
)
)
)
)
)
[1] => stdClass Object
(
[id] => 698
[label] => Auto & RCA
[children] => Array
(
[0] => stdClass Object
(
[id] => 1136
[label] => Reparatii si echipamente auto
[children] => Array
(
[0] => stdClass Object
(
[id] => 909
[label] => Compresoare Redresoare and Accesorii
)
)
)
)
)
......................................
在我测试过的php页面中：
$object = new ProductsList();
$cats = $object->getCategories();
$cat = array();
foreach ($cats as $item) {
foreach ($item as $key => $value) {
$cat[] = array("id" => $value->id, "name" => $value->label);
if(isset($value->children)){
foreach ($value->children as $key => $value) {
$cat[] = array("id" => $value->id, "name" => $value->label);
if(isset($value->children)){
foreach ($value->children as $key => $value) {
$cat[] = array("id" => $value->id, "name" => $value->label);
if(isset($value->children)){
foreach ($value->children as $key => $value) {
$cat[] = array("id" => $value->id, "name" => $value->label);
if(isset($value->children)){
foreach ($value->children as $key => $value) {
$cat[] = array("id" => $value->id, "name" => $value->label);
}
}
}
}
}
}
}
}
}
}
输出如下：
Array
(
[0] => Array
(
[id] => 330
[name] => Electrocasnice Mici
)
[1] => Array
(
[id] => 335
[name] => Aspiratoare
)
[2] => Array
(
[id] => 374
[name] => Aparate pentru bucatarie
)
[3] => Array
(
[id] => 373
[name] => Masini de tocat
)
[4] => Array
(
[id] => 1153
[name] => Accesorii masini de tocat
)
[5] => Array
(
[id] => 698
[name] => Auto & RCA
)
......................................................
正是我需要的，从所有类别树中提取 ID 和类别名称！ 令人惊讶的是，当我在 codeigniter 中将此代码用作函数时，出现错误：
消息：试图获取非对象的属性“id”
文件名：products/Categories.php
行号：225
这一行是我的 php 代码中的第一个 $cat[] = array("id" => $value->id, "name" => $value->label);。
如果我删除它，我将无法查看主要类别，例如
- [label] => Electrocasnice Mici
- [标签] => 自动 & RCA
谁能告诉我这是怎么回事？为什么在 php 中只有代码可以工作，但是当我在 codeigniter 上用作控制器中的函数时，我得到了帽子错误！
【问题讨论】：
-
尝试获取非对象的属性“id”，这意味着基本上您正在尝试获取数组元素的值，如对象样式语法。示例：对于数组，它将是 $data['name'] & 对于对象，它将是 $data->name
-
您的代码制表符具有误导性，会产生不必要的线宽。
-
我们无法使用提供的详细信息生成事件。当您在 CodeIgniter 中运行代码时，我们不知道为什么
id属性不可用。
标签： php arrays codeigniter