ConFoo 2025

ReflectionClass::isCloneable

(PHP 5 >= 5.4.0, PHP 7, PHP 8)

ReflectionClass::isCloneable返回了一个类是否可复制

说明

public ReflectionClass::isCloneable(): bool

返回了这个类是否可复制。

参数

此函数没有参数。

返回值

如果这个类可以复制返回 true,否则返回 false

示例

示例 #1 ReflectionClass::isCloneable() 的基本用法

<?php
class NotCloneable {
public
$var1;

private function
__clone() {
}
}

class
Cloneable {
public
$var1;
}

$notCloneable = new ReflectionClass('NotCloneable');
$cloneable = new ReflectionClass('Cloneable');

var_dump($notCloneable->isCloneable());
var_dump($cloneable->isCloneable());
?>

以上示例会输出:

bool(false)
bool(true)

添加备注

用户贡献的备注 4 notes

up
1
info at ensostudio dot ru
2 years ago
similar function:
<?php
function isCloneable(object $obj): bool
{
return !
method_exists($obj, '__clone') || is_callable([$obj, '__clone']);
}
?>
up
0
info at ensostudio dot ru
2 years ago
this method checks is `__clone()` method was declared as private
up
0
xxxargonxxx at gmail dot com
5 years ago
I wonder how this method decides of is it clonable or not. There is no explanation.
up
-4
php at abiusx dot com
8 years ago
This does not work for many of core-classes, just like most other reflection methods.
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