如何修复错误：尝试获取非对象的属性？
我想在点击 $_POST['name'] 后获取，并在名称插入的位置获取行 ID 以插入其他表中，但出现以下错误。错误的原因是什么？如何修复？
$name = $this -> input -> post('name');
$query_re = $this->db->get_where('tour_foreign', array('name' => $name))->row();
$data2 = array();
foreach ($residence_name as $idx => $name) {
$data2[] = array(
'relation' => $query_re->id, //This is line number 58
'hotel_id' => $residence_id[$idx],
'name' => $residence_name[$idx],
);
};
$data222 = $this->db->insert_batch('residence', $data2);
错误：
遇到 PHP 错误
严重性：通知
消息：正在尝试 获取非对象的属性
文件名：foreign.php
Line 数量：58
I want get from after click $_POST['name'] and where it with name inserting that get row id for insert in other table, but get following error. What is the cause of the error? How to fix?
$name = $this -> input -> post('name');
$query_re = $this->db->get_where('tour_foreign', array('name' => $name))->row();
$data2 = array();
foreach ($residence_name as $idx => $name) {
$data2[] = array(
'relation' => $query_re->id, //This is line number 58
'hotel_id' => $residence_id[$idx],
'name' => $residence_name[$idx],
);
};
$data222 = $this->db->insert_batch('residence', $data2);
Error:
A PHP Error was encountered
Severity: Notice
Message: Trying
to get property of non-object
Filename: foreign.php
Line
Number: 58
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评论（4）
看来这个数据库调用返回零行：
在调用 row() 之前还可以考虑使用 num_rows() 检查数据库调用的结果。
It seems that this database call returns zero rows :
Also consider using num_rows() to check the result of the database call before calling row().
基本上，代码试图告诉您的是，您正在尝试获取不是对象（类的实例）的变量的属性。
所以像数字 58 一样，它表示 $query_re 不是一个对象，因此不能具有属性“id”。
Basically what the code is trying to tell you, is that you're trying to get a property of a variable which is NOT an object (an instance of a class).
So on like number 58, it's saying that $query_re is not an object, and therefore cannot have the property 'id'.
PHP 不允许您将函数的返回值视为对象，除非它返回引用。尝试
编辑：
没关系，我错过了“第 58 行”注释，我猜 PHP5 允许链接。想要
PHP doesn't allow you to treat the return value of a function as an object, unless it returns a reference. Try
Edit:
Nevermind, I missed the 'line 58' comment, and I guess PHP5 allows chaining. Fancy