在父对象是克隆的对象数组中取消设置属性

如何解决在父对象是克隆的对象数组中取消设置属性

我需要克隆一个对象，然后从克隆中删除一些属性。在克隆对象上使用 unset() 工作正常，但不适用于对象的克隆对象数组。我已经简化了对象，因为它有更多的属性，但前提是相同的。

$testobject = new stdClass();
$testobject->propertya = 'banana';
$testobject->propertyb = 'orange';
$testobject->propertyc = 'apple';
$testobject->childarray = array();
$testobject->childarray[] = new stdClass();
$testobject->childarray[0]->childpropertya = 'cola';
$testobject->childarray[0]->childpropertyb = 'bread';
$testobject->childarray[0]->childpropertyc = 'pasta';

echo "Original object:\n";
print_r($testobject);

$cloneobject = clone $testobject;

unset($cloneobject->propertyb);
foreach ($cloneobject->childarray as $index => $data) {
    unset ($data->childpropertya);
}
unset($cloneobject->childarray['childpropertyc']);

echo "Original object expected to be the same but is NOT!:\n";
print_r($testobject);

我希望 $testobject 不会改变，但它确实改变了。为什么？！

我在 3v4l here

中重新创建了格式

解决方法

解决了，感谢@nice_dev 的提示

$testobject = new stdClass();
$testobject->propertya = 'banana';
$testobject->propertyb = 'orange';
$testobject->propertyc = 'apple';
$testobject->childarray = array();
$testobject->childarray[] = new stdClass();
$testobject->childarray[0]->childpropertya = 'cola';
$testobject->childarray[0]->childpropertyb = 'bread';
$testobject->childarray[0]->childpropertyc = 'pasta';

echo "Original object \n";
print_r($testobject);

$cloneobject = unserialize(serialize($testobject));

unset($cloneobject->propertyb);
foreach ($cloneobject->childarray as $index => $data) {
    unset ($data->childpropertya);
}
unset($cloneobject->childarray['childpropertyc']);

echo "Original object is the same!\n";
print_r($testobject);
echo "Copied object is now different than $testobject!\n";
print_r($cloneobject);