studentportalen.php

<?php
$username = '';
$password = '';
$points   = '';

$login_url    = 'https://www3.student.liu.se/portal/login';
$redirect     = 1;
$redirect_url = '/portal/sv/portal/';
$time         = 0;
$login_para   = '';

// Lets do this
$dom = new DOMDocument('1.0');
@$dom->loadHTMLFile($login_url);

// Get all inputs
$nodes = $dom->getElementsByTagName('input');

// Loop through elements
foreach ($nodes as $node) {
    if ($node->hasAttributes()) {
        foreach ($node->attributes as $attribute) {
            if ($attribute->nodeName == 'name' && $attribute->nodeValue == 'login_para') {
                $login_para = $dom->saveHTML($node);
            } elseif ($attribute->nodeName == 'name' && $attribute->nodeValue == 'time') {
                $time = $dom->saveHTML($node);
            }
        }
    }
} unset($node);

// Parse html as xml
// First the time (maybe we can use local time?)
$time = str_replace(">", " />", $time);
$x = (array) new SimpleXMLElement($time);
$time = $x['@attributes']['value'];
// And then the login_para
$login_para = str_replace(">", " />", $login_para);
$x = (array) new SimpleXMLElement($login_para);
$login_para = $x['@attributes']['value'];

$post_data = 'user='.$username.
             '&pass='.$password.
             '&time='.$time.
             '&login_para='.$login_para.
             '&redirect='.$redirect.
             '&redirect_url='.$redirect_url;

// Init curl
$ch = curl_init();

// Set the URL to work with
curl_setopt($ch, CURLOPT_URL, $login_url);

// Enable HTTP POST
curl_setopt($ch, CURLOPT_POST, 1);

// Set the post parameters
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);

// Handle cookies for the login
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie.txt');

// Be quiet
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

// Execute the request (the login)
$store = curl_exec($ch);

// The login is now done

// Get the result page
curl_setopt($ch, CURLOPT_URL, 'https://www3.student.liu.se/portal/studieresultat/');

// Execute the request
$content = curl_exec($ch);

// Has the number of points ben updated?
if (strpos(utf8_encode($content), $points) !== false) {
    echo 'Du har inte fått in något resultat'."\n";
} else {
    echo 'Du har ett resultat'."\n";
}

// close cURL resource, and free up system resources
curl_close($ch);