[PHP] CURL获取cookie，模拟登录获取数据

需求：通过CURL先登录，然后获取登录后的cookie，在请求数据接口的时候带上这个cookie即可！

直接贴代码：

<?php

class CurlLoginDemo
{
    public $config = [
        //登录接口和参数
        'login_url' => 'http://localhost/login',
        'login_post_data' => [
            'username' => 'aaa',
            'password' => 'aaa',
        ],
        
        //数据接口
        'list_url' => 'http://localhost/list',
        'list_post_data' => [
            'page' => 1,
            'rows' => 30,
        ],
     ];
    public $cookie = '';

    //登录接口，获取cookie
    public function login()
    {
        $re = $this->post_curl($this->config['login_url'], $this->config['login_post_data'], 1);
        
        // 解析HTTP数据流
        list($header, $body) = explode("

", $re);
        // 解析COOKIE
        preg_match("/set-cookie:([^
]*)/i", $header, $matches);
        //请求的时候headers 带上cookie就可以了
        $cookie = explode(';', $matches[1])[0];

        $this->cookie = trim($cookie);
    }

    //执行登录后的操作
    public function execute()
    {
        $re = $this->post_curl($this->config['list_url'], $this->config['list_post_data']);

        //$json = json_decode($re, true);

        var_dump($re);
    }

    //发送请求
    function post_curl($url, $params=[], $isShowHeader=0){
        $httpInfo = array();
        $ch = curl_init();

        curl_setopt( $ch, CURLOPT_HEADER, $isShowHeader);
        curl_setopt( $ch, CURLOPT_HTTP_VERSION , CURL_HTTP_VERSION_1_1 );
        curl_setopt( $ch, CURLOPT_USERAGENT , 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36' );
        curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT , 30 );
        curl_setopt( $ch, CURLOPT_TIMEOUT , 30);
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER , true );

        curl_setopt( $ch , CURLOPT_POST , true );
        curl_setopt( $ch , CURLOPT_POSTFIELDS , http_build_query($params));
        curl_setopt( $ch , CURLOPT_URL , $url );

        if($this->cookie){
            curl_setopt($ch, CURLOPT_COOKIE, $this->cookie);//设置cookie
        }

        $response = curl_exec( $ch );
        if ($response === FALSE) {
          return false;
        }

        curl_close( $ch );
        return $response;
    }

    //启动
    public function start()
    {
        try{
            $this->login();
            if(!$this->cookie){
                throw new Exception("登录失败！");
            }
            $this->execute();
        }catch(Exception $e){
            print($e);
        }
    }

}

$obj = new CurlLoginDemo();
$obj->start();