php get web page data

Question

I want to write a web page data collection with cookies. I don’t know how to write PHP. Can anyone give me an answer?

Collection URL = “https://steamcommunity.com/tradeoffer/new/partnerinventory/?sessionid =29475e48124c520cf70060dc&partner=76561198124311480&appid=433850&contextid=1”


cookie="sessionid=29475e48124c520cf70060dc;steamLoginSecure=765611981170479 52||512C7DB04B6A9719E1673019C075AA5ECF2B5032"


Can you write an example with explanation? Thank you. This cookie has a time limit. If it expires, just write a message

Answer 1

<?php
error_reporting(E_ALL);
ini_set('display_errors','1');
ignore_user_abort();
set_time_limit(0);
$cookie_path='./';
$vars['username']='wang';
$vars['password']='123456';
$method_post=true;
$url='http://ceshi.php.cn/user/usertop_login.asp';
$ch=curl_init();
$params[CURLOPT_URL]=$url;
$params[CURLOPT_HEADER]=0;//是否显示http头信息
$params[CURLOPT_RETURNTRANSFER]=true;
$params[CURLOPT_FOLLOWLOCATION]=0;
$params[CURLOPT_USERAGENT]='Mozilla/5.0 (Windows NT 6.1; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0';
//$params[CURLOPT_SSL_VERIFYPEER]=false;
//$params[CURLOPT_SSL_VERIFYHOST]=false;
$postfields='';
foreach($vars as $k=>$v){
    $postfields.=urlencode($k).'='.urlencode($v).'&'; 
}
$params[CURLOPT_POST]=true;
$params[CURLOPT_POSTFIELDS]=$postfields;
if(isset($_COOKIE['cookie_jar']) && ($_COOKIE['cookie_jar'] || is_file($_COOKIE['cookie_jar']))){
    $params[CURLOPT_COOKIEFILE]=$_COOKIE['cookie_jar'];
}else{
    $cookie_jar=tempnam($cookie_path,'cookie');//产生一个cookie文件
    $params[CURLOPT_COOKIEJAR]=$cookie_jar;//写入cookie信息
    setcookie('cookie_jar',$cookie_jar);//保存cookie路径
}
curl_setopt_array($ch,$params);
$content=curl_exec($ch);
//var_dump(strip_tags($content));
 
//第二步
$params[CURLOPT_FOLLOWLOCATION]=true;
$nexturl='http://ceshi.php.cn/user/vpsadm2.asp?id=100568&go=c';
$params[CURLOPT_URL]=$nexturl;
$params[CURLOPT_POSTFIELDS]='';
curl_setopt_array($ch,$params);
$content=curl_exec($ch);
 
 
sleep(5);
 
//第三步
$nexturl='http://ceshi.php.cn/vpsadm/selfvpsmodifyendtime.asp';
$params[CURLOPT_URL]=$nexturl;
$params[CURLOPT_POSTFIELDS]='year=9001&moneynow=10&id=100568&';
curl_setopt_array($ch,$params);
$content=curl_exec($ch);
echo strip_tags($content);
 
curl_close($ch);