class

<?php
class Test{
    protected $parameters=array();


     /**
     * @return array
     */
    public function getParameters()
    {
        return $this->parameters;
    }

    /**
     * @param  string $key
     * @return mixed
     */
    public function getParameter($key)
    {
        return $this->parameters[$key];
    }

    /**
     * @param  string $key
     * @param  mixed  $value
     * @return $this
     */
    public function setParameter($key, $value)
    {
        $this->parameters[$key]= $value;

        return $this;
    }


        /**
     * @param $value
     *
     * @return $this
     */
    public function setName($value)
    {
        
        return $this->setParameter('name', $value);
    }



}

$test=new Test();
$test->setParameter('age',20);
$test->setParameter('name','lilei');
$test->setName('张三');
$name=$test->getParameter('name');
$params=$test->getParameters();
var_dump($name);
var_dump($params);