PHP中的stdClass是什么（如何使用？） _PHP空类

stdClass是PHP中的空类, 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, 如果对对象类型进行了转换/类型转换, 则将创建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。
在动态对象中很有用。
用于设置动态属性等。

程序1：使用数组存储数据

< ?php//Array definition of an employee $employee_detail_array = array ( "name" => "John Doe" , "position" => "Software Engineer" , "address" => "53, nth street, city" , "status" => "best" ); //Display the array content print_r( $employee_detail_array ); ?>

输出如下：

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)

< ?php//Object-styled definition of an employee $employee_object = new stdClass; $employee_object -> 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 ); ?>

输出如下：

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

注意：可以将数组类型转换为对象以及对象到数组。
程序3：将数组转换为对象

< ?php//Aarray definition of an employee $employee_detail_array = array ( "name" => "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 ); ?>

【PHP中的stdClass是什么（如何使用？）】输出如下：

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

计划4：将对象属性转换为数组

< ?php//Object-styled definition of an employee $employee_object = new stdClass; $employee_object -> 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 ); ?>

输出如下：