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,如果转换/类型化对象类型,则创建stdclass的实例,如果它不是null。如果为null,则新实例将为空。
用途:
1.stdClass通过调用它们直接访问成员。
2.它在动态对象中很有用。
3.它用于设置动态属性等。
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程序1:使用数组存储数据
<?php // 定义一个数组employee $employee_detail_array = array( "name" => "John Doe", "position" => "Software Engineer", "address" => "53, nth street, city", "status" => "best" ); // 显示内容 print_r($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)
<?php // 定义employee对象样式 $employee_object = new stdClass; $employee_object->name = "John Doe"; $employee_object->position = "Software Engineer"; $employee_object->address = "53, nth street, city"; $employee_object->status = "Best"; // 显示内容 print_r($employee_object); ?>
输出:
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,将对象转换为数组。
程序3:将数组转换为对象
<?php // $employee_detail_array = array( "name" => "John Doe", "position" => "Software Engineer", "address" => "53, nth street, city", "status" => "best" ); // 从数组到对象的类型转换 $employee = (object) $employee_detail_array; print_r($employee); ?>
输出:
Array ( [name] => John Doe [position] => Software Engineer [address] => 53, nth street, city [status] => Best )
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