PHP链式调用对象方法

class Test {

    /**
     * name.
     * 
     * @var 
     */
    private $name;

    /**
     * set name value
     * 
     * @author: hh
     * @return $this
     */
    public function setName(string $name)
    {
        $this->name = $name;

        return $this;
    }

    /**
     * get name value.
     * 
     * @author: hh
     * @return mixed
     */
    public function getName()
    {
        return $this->name;
    }
}

// 调用

$test = new Test();

echo $test->setName('test')->getName();