插件开发指导

安装querylist

composer create-project jaeger/querylist

querylist/Ext目录可用于存放QueryList扩展

<?php
/**
 * QueryList的Hello扩展演示
 */
namespace QL\Ext;
class Hello extends AQuery
{
    /**
     * 必须要实现run()方法
     */
    public function run(array $args)
    {
        //getInstance()方法用于获取任意类的实例，默认获取QueryList实例
        $ql = $this->getInstance();
        //设置QueryList对象的html属性
        $ql->html = $this->getHtml($args['url']);
        //返回QueryList对象
        return $ql;
    }
     * 自定义一个抓取网页源码的方法
     */
    public function getHtml($url)
    {
      return file_get_contents($url);
    }
}

输出结果:

Array
(
    [0] => Array
        (
            [title] => 百度一下，你就知道
        )
)

扩展之间还可以继承，下面的Login扩展继承了Request扩展并重写了run()方法:

<?php
namespace QL\Ext;
/**
 * @Author: Jaeger <hj.q@qq.com>
 * @version                  1.0
 * 模拟登陆扩展
 */
{
    private $http;
    public function run(array $args)
    {
        $this->http = $this->hq($args);
        $this->html = $this->http->result;
        return $this;
    }
    public function get($url,$callback = null,$args = null)
    {
        $result = $this->http->get($url);
        return $this->getQL($result,$callback,$args);
    }
    public function post($url,$data=array(),$callback = null,$args = null)
    {
        $result = $this->http->post($url,$data);
        return $this->getQL($result,$callback,$args);
    }
    private function getQL($html,$callback = null,$args = null)
    {
        if(is_callable($callback)){
            $result = call_user_func($callback,$result,$args);
        }
        $ql = $this->getInstance();
        $ql->html = $html;
        return $ql;
    }