【12306】登陆流程实现（微信小程序 + php)

好像很久之前写过一篇爬12306登录接口的帖子,没写完,今天就接着来写了.

接口及大致流程见  →→→接口说明

这篇直接上代码

首先是php代码中最重要的get请求方法!!!

/**
 * get请求方法
 * @param $url
 * @param array $_header
 * @return bool|mixed
 */
function get( $url, $_header = [] ,$cookie_path = '')
{
    //(假装浏览器请求)
    $_header = array_merge($_header,[
        'User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36',
        'Connection:keep-alive',
        'Accept-Language:zh-CN,zh;q=0.8',
        'Accept-Encoding:gzip, deflate, br',
        'Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'Upgrade-Insecure-Requests:1'
    ]);

    $curl = curl_init();
    if( stripos($url, 'https://') !==FALSE )
    {
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
    }
    //这个很重要
    if(!empty($cookie_path)){
        //访问时带上cookie文件里的内容转成cookie字符串附加在请求头里面
        curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_path);
        //这个是把响应的cookie存进cookie保存起来
        curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_path);
    }

    //这个是针对12306响应内容 乱码的处理
    curl_setopt($curl, CURLOPT