Codigo fuente

<html>
    <head>
        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
        <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
        <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
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    </head>
    <body>
    <?php
    //incluye funciones y variables necesarias
        include ('C:/xampp/htdocs/moodle/last_version/curl.php');
        include ('C:/xampp/htdocs/moodle/config.php');
        include ('C:/xampp/htdocs/moodle/last_version/variables.php');
        include ('C:/xampp/htdocs/moodle/last_version/utils.php');

    //variables iniciales
        global $DB, $USER;
        $userid = $USER->id;
    	$token = 'aa83b056fd2b742181d9c1d883b0f216';
    	$domainname = 'http://localhost/moodle';
    	$fixed_url = json_encode($domainname);
        $serverurl = $domainname . '/webservice/xmlrpc/server.php'. '?wstoken=' . $token;

        echo '<centered> <div class="card-group">';

    //request a moodle con funcion para obtener los cursos del usuario
        $curl = new curl;
        $functionname = 'core_enrol_get_users_courses';
        $post = xmlrpc_encode_request($functionname, array($userid));
        $resp = xmlrpc_decode($curl->post($serverurl, $post));  //la variable resp devuelve toda la informacion de la llamada

    //foreach para iterar entre los datos y obtener los deseados
        foreach($resp as $value){
            echo '<div class="card">';
            echo '<div class="card-body">';
            $cursos = $value['fullname'];
            echo '<h5 class="card-title text-center">'.$cursos.'</h5>';
            echo '<hr/>';
            echo '</div>';

    //variable apartir del anterior request como parametro para la siguiente llamada
            $courseid = $value['id'] ;

        //request para obtener los usuarios de cada curso
            $curl = new curl;
            $functionname = 'core_enrol_get_enrolled_users';
            $post = xmlrpc_encode_request($functionname, array($courseid));
            $resp = xmlrpc_decode($curl->post($serverurl, $post));  //resp contiene la informacion de la nueva llamada

        //foreach para iterar en el nuevo array
            foreach($resp as $value){
                $usuarios_enrolled = $value['username'];
                echo ' <p class="card-text text-center">'.$usuarios_enrolled.'</p>';
                echo '<br/>';
            }
            echo '</div>';
        }

        echo '</div> </centered>'
    ?>

    </body>

</html>