PHP的stdClass 是什么？

stdClass 是PHP的空类，用于将其他类型转换为对象。它类似于Java或Python对象。 stdClass 不是对象的基类。如果将对象转换为对象，则不会对其进行修改。但是，如果对象类型被转换/类型转换，则会创建 stdClass 的实例，如果它不是 NULL。如果为 NULL，则新实例将为空。

用途：

• stdClass 通过调用成员直接访问成员。
• 它在动态对象中很有用。
• 它用于设置动态属性等。

方案一：使用数组存储数据

 "John Doe",
    "position" => "Software Engineer",
    "address" => "53, nth street, city",
    "status" => "best"
);
  
// Display the array content
print_r($employee_detail_array);
?>

输出：

Array
(
    [name] => John Doe
    [position] => Software Engineer
    [address] => 53, nth street, city
    [status] => best
)

程序 2：使用 stdClass 而不是数组来存储员工详细信息（动态属性）

name = "John Doe";
$employee_object->position = "Software Engineer";
$employee_object->address = "53, nth street, city";
$employee_object->status = "Best";
      
// Display the employee contents
print_r($employee_object);
?>

输出：

stdClass Object
(
    [name] => John Doe
    [position] => Software Engineer
    [address] => 53, nth street, city
    [status] => Best
)

注意：数组到对象和对象到数组的类型转换是可能的。

程序 3：将数组转换为对象

 "John Doe",
    "position" => "Software Engineer",
    "address" => "53, nth street, city",
    "status" => "best"
);
  
// type casting from array to object
$employee = (object) $employee_detail_array;
      
print_r($employee);
?>

输出：

stdClass Object
(
    [name] => John Doe
    [position] => Software Engineer
    [address] => 53, nth street, city
    [status] => best
)

程序 4：将对象属性转换为数组

name = "John Doe";
$employee_object->position = "Software Engineer";
$employee_object->address = "53, nth street, city";
$employee_object->status = "Best";
  
// The object is converted into array 
// using type casting
$employee_array = (array) $employee_object;
  
// Display the result in array
print_r($employee_array);
?>

输出：

Array
(
    [name] => John Doe
    [position] => Software Engineer
    [address] => 53, nth street, city
    [status] => Best
)

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