如何在php中卷曲并保存会话，并最终使用会话变量

Question

I have tried to simulate mass login using javascript, by pasting a bunch of codes in the google chrome console.

These is what I basically do:

var data = [{u:1, p:1}, {u:2, p:2}, {u:3, p:3} ...]

function login(u,p,callback){
    $.post('/login.php', {u:u, p:p}).done(function(){
       logout(callback);
    });
}

function logout(callback){
   // delete session cookies using javascript
   callback();
}

function main(){
  // recursive function to iterate in the data collection
  login(data[counter].u, data[counter].p, function(){
     if(counter++ < data.length){
        main();
     }
  });
}

Question

How do I do that using php curl? This is specifically about how to emulate sessions so that the "only member actions" can also be access after login.

How do I clear the session, if I don't have to use destroy sessions, in javascript you would just delete the session cookies stored in the browser. In curl php, how do I do that?

My attempt

$url = 'login.php';
$fields = array(
            'u' => urlencode('1'),
            'p' => urlencode('1')
        );

//url-ify the data for the POST
foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
rtrim($fields_string, '&');

$ch = curl_init();

//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);

//execute post
$result = curl_exec($ch);

//close connection
curl_close($ch);

As you can see, I tried 1 set of credentials. But beyond that, I do not know what to do.

Answer 1

How do I clear the session? In your php code you didn't create any session(i mean any cookie file). So you do not need to clear anything.

But however, if you need to create session/cookie, then you have to use CURLOPT_COOKIEJAR and CURLOPT_COOKIEFILE

I have modified you code a bit too. Here it is:

$fields = array(
    'u' => '1',
    'p' => '1'
);

$ch = curl_init($url);
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, http_build_query($fields));

// uncomment if you want to save cookie.
// curl_setopt($ch, CURLOPT_COOKIEJAR, '/var/tmp/cookie.txt');
// curl_setopt($ch, CURLOPT_COOKIEFILE, '/var/tmp/cookie.txt');

$result = curl_exec($ch);
curl_close($ch);

// do some other processes

// and then you can unlink('/var/tmp/cookie.txt') if you want