如何从继承的类设置父属性

时间:2012-11-26 02:32:32

标签: php inheritance

我有这两个类:

<?php

class Test 
{
    protected $x = 0;

    public function setX($x)
    {
        $this->x = $x;
    }

    public function getX()
    {
        echo $this->x;
    }
}


class TestEx extends Test
{
    //parent::$this->x = 7; it gives this error: Parse error: syntax error, unexpected '$x' (T_VARIABLE), expecting function (T_FUNCTION) in test.php

    public function getX()
    {
        echo parent::$this->x;
    }

}



$call_textex = new TestEx();
$call_textex->getX();


?>

现在,我想从继承的类中设置基类的$ x属性。如何在PHP5中实现这一点?

1 个答案:

答案 0 :(得分:0)

将你的作业放在构造函数中,然后使用$this

class TestEx extends Test
{
    public function __construct()
    {
        $this->x = 7;
    }

    public function getX()
    {
        echo $this->x;
    }
}

在此处查看:[{3}}