对于更复杂的http网络操作
QueryList
本身内置的网络操作非常简单,QueryList
关注于DOM选择;对于更复杂的网络操作可以选择使用Request扩展
,它可以简单的实现:携带cookie、伪造来路、伪造浏览器等功能,但如果觉的它依旧不能满足你的需求,下面有几个可以参考的方案:
1.自己用curl封装一个http请求
例:
function getHtml($url)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_REFERER, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
$rules = array(
//采集规则
);
//获取页面源码
$html = getHtml('http://xxx.com');
//采集
$data = QueryList::Query($html,$rules)->data;
2.使用第三方http包
QueryList
可以无缝与任意第三放http包配合使用,下面以guzzlehttp/guzzle
包为例,Guzzle
是一个PHP的HTTP客户端,用来轻而易举地发送请求,并集成到我们的WEB服务上。
Guzzle
中文手册:http://guzzle-cn.readthedocs.io/zh_CN/latest/
安装
//安装QueryList
composer require jaeger/querylist
//安装Guzzle
composer require guzzlehttp/guzzle
使用
<?php
require 'vendor/autoload.php';
//实例化一个Http客户端
$client = new GuzzleHttp\Client(['base_uri' => 'https://phphub.org']);
$jar = new \GuzzleHttp\Cookie\CookieJar();
//发送一个Http请求
$response = $client->request('GET', '/categories/6', [
'headers' => [
'User-Agent' => 'testing/1.0',
'Accept' => 'application/json',
'X-Foo' => ['Bar', 'Baz']
],
'form_params' => [
'foo' => 'bar',
'baz' => ['hi', 'there!']
],
// 'cookies' => $jar,
'timeout' => 3.14,
// 'proxy' => 'tcp://localhost:8125',
// 'cert' => ['/path/server.pem', 'password'],
]);
$body = $response->getBody();
//获取到页面源码
$html = (string)$body;
//采集规则
$rules = array(
//文章标题
'title' => ['.media-heading a','text'],
//文章链接
'link' => ['.media-heading a','href'],
//文章作者名
'author' => ['.img-thumbnail','alt']
);
//列表选择器
$rang = '.topic-list>li';
//采集
$data = \QL\QueryList::Query($html,$rules,$rang)->data;
//查看采集结果
print_r($data);
结果:
Array
(
[0] => Array
(
[title] => 好友动态的实现原理
[link] => https://phphub.org/topics/2750
[author] => luo975974740
)
[1] => Array
(
[title] => 打造完美的 Ubuntu16.04 开发环境【持续更新】
[link] => https://phphub.org/topics/2723
[author] => liuwantao
)
//省略........
[19] => Array
(
[title] => [Laravel 5.3 新功能] 10. 全文搜索方案 Laravel Scout 介绍
[link] => https://phphub.org/topics/2673
[author] => monkey
)
)