每次调用$this->processes->data时，$this->load_operations()都会以某种方式扩展。我真的不明白为什么当我的代码没有明确修改该对象时，该对象也会更改。

我想念什么吗？

如果我将$process（在foreach中）强制转换为数组，然后返回到对象$this->processes->data，则不会扩展。

$process = (array) $process;
$process = (object) $process;

class Test_library
{
    private $processes;
    private $tasks;
    private $operations;

    public function __construct()
    {
        $this->processes = (object) array(
            'data' => (object) array(
                '3' => (object) array(
                    'id' => '3',)
            )
        );

        $this->tasks = (object) array(
            'data' => (object) array(
                '5' => (object) array(
                    'id' => '5','processes_id' => '3',),'6' => (object) array(
                    'id' => '6',)
            )
        );

        $this->operations = (object) array(
            'processes' => (object) array(
                '3' => (object) array(
                    'id' => '3','data' => array()
                )
            )
        );

        print_r($this->processes->data);

        $this->load_operations();

        print_r($this->processes->data);
    }

    private function load_operations()
    {
        if(!empty($this->processes->data))
        {
            foreach($this->processes->data as $process)
            {
                $this->operations->processes->{$process->id} = $process;
            }
        }

        if(!empty($this->tasks->data))
        {
            foreach($this->tasks->data as $task)
            {
                $this->operations->processes->{$task->processes_id}->data[] = (object) [
                    'machine' => [],'task' => $task
                ];
            }
        }
    }
}

new Test_library;

两个print_r的结果应该相同。