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Home Backend Development PHP Tutorial PHP对象属性赋值丢失问题?

PHP对象属性赋值丢失问题?

Jun 06, 2016 pm 08:37 PM
php

<code><?php class demo
{
    public $name;
    public function test1()
    {
        $this->name = 'zhangsan';
    }

    public function test2()
    {
        print_r($this->name);
    }

}

$obj = new demo();

$obj->test1();

$obj->test2(); // 输出 zhangsan


我在一个PHP文件里面执行结果如上,但是我用框架开发网站测试调用的时候执行流程如下:
1.我的test1方法跳到模板 ,并且方法里将$name 赋值了 'lisi'
2.模板提交的时候提交到了test2,并且打印出属性$name为空

这是为啥呢??
</code>
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回复内容:

<code><?php class demo
{
    public $name;
    public function test1()
    {
        $this->name = 'zhangsan';
    }

    public function test2()
    {
        print_r($this->name);
    }

}

$obj = new demo();

$obj->test1();

$obj->test2(); // 输出 zhangsan


我在一个PHP文件里面执行结果如上,但是我用框架开发网站测试调用的时候执行流程如下:
1.我的test1方法跳到模板 ,并且方法里将$name 赋值了 'lisi'
2.模板提交的时候提交到了test2,并且打印出属性$name为空

这是为啥呢??
</code>
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Copy after login

想到的几种可能

1.不是同一个实例

前后引用对象的方式是否真的引用到同一个实例上?

2.有魔术方法改变了行为

<code>php</code><code><?php class BadAss {
    function __set($name, $value) {
        $this->{self::confuse($name)} = $value;
    }

    private static function confuse($name) {
        return substr($name, 0, 4) !== 'bad_' ? "bad_$name" : $name;
    }
}

$o = new BadAss;
$o->name = 'value';

var_dump($o);//bad_name => value
</code>
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是一个实体么

你要获取$name 直接使用$obj->name 不就获取了。

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