PHP 可以继承非类对象的属性吗?
phpserver side programmingprogramming更新于 2025/7/17 4:52:17
为此，请使用 clone 并将属性名称设置为 null。
示例
PHP 代码如下
<!DOCTYPE html>
<html>
<body>
<?php
$firstObject = (object)[
"Name" => "John",
"Age" => 20
];
$secondObject = clone $firstObject;
var_dump($firstObject);
echo "<br>";
var_dump($secondObject);
foreach ($secondObject as $keyName => $keyValue) {
$secondObject->$keyName = null;
}
echo "<br>";
var_dump($secondObject);
$firstObject = [
"Name" => "John",
"Age" => 20
];
echo "<br>";
$arrayObject= array_fill_keys(array_keys($firstObject), null);
$secondObject = (object)$arrayObject;
var_dump($secondObject);
?>
</body>
</html>
输出
这将产生以下输出 −
object(stdClass)#1 (2) { ["Name"]=> string(4) "John" ["Age"]=> int(20) }
object(stdClass)#2 (2) { ["Name"]=> string(4) "John" ["Age"]=> int(20) }
object(stdClass)#2 (2) { ["Name"]=> NULL ["Age"]=> NULL }
object(stdClass)#1 (2) { ["Name"]=> NULL ["Age"]=> NULL }
