PHP chat_get_users函数代码示例

            echo '</p>';
        }
    }


    echo $OUTPUT->box_end();

} else {
    echo $OUTPUT->box_start('generalbox', 'notallowenter');
    echo '<p>'.get_string('notallowenter', 'chat').'</p>';
    echo $OUTPUT->box_end();
}

chat_delete_old_users();

if ($chatusers = chat_get_users($chat->id, $currentgroup, $cm->groupingid)) {
    $timenow = time();
    echo $OUTPUT->box_start('generalbox', 'chatcurrentusers');
    echo $OUTPUT->heading($strcurrentusers, 4);
    echo '<table>';
    foreach ($chatusers as $chatuser) {
        $lastping = $timenow - $chatuser->lastmessageping;
        echo '<tr><td class="chatuserimage">';
        $url = new moodle_url('/user/view.php', array('id'=>$chatuser->id, 'course'=>$chat->course));
        echo html_writer::link($url, $OUTPUT->user_picture($chatuser));
        echo '</td><td class="chatuserdetails">';
        echo '<p>'.fullname($chatuser).'</p>';
        echo '<span class="idletime">'.$stridle.': '.format_time($lastping).'</span>';
        echo '</td></tr>';
    }
    echo '</table>';

function chat_extend_navigation($navigation, $course, $module, $cm)
{
    global $CFG;
    $currentgroup = groups_get_activity_group($cm, true);
    if (has_capability('mod/chat:chat', context_module::instance($cm->id))) {
        $strenterchat = get_string('enterchat', 'chat');
        $target = $CFG->wwwroot . '/mod/chat/';
        $params = array('id' => $cm->instance);
        if ($currentgroup) {
            $params['groupid'] = $currentgroup;
        }
        $links = array();
        $url = new moodle_url($target . 'gui_' . $CFG->chat_method . '/index.php', $params);
        $action = new popup_action('click', $url, 'chat' . $course->id . $cm->instance . $currentgroup, array('height' => 500, 'width' => 700));
        $links[] = new action_link($url, $strenterchat, $action);
        $url = new moodle_url($target . 'gui_basic/index.php', $params);
        $action = new popup_action('click', $url, 'chat' . $course->id . $cm->instance . $currentgroup, array('height' => 500, 'width' => 700));
        $links[] = new action_link($url, get_string('noframesjs', 'message'), $action);
        foreach ($links as $link) {
            $navigation->add($link->text, $link, navigation_node::TYPE_SETTING, null, null, new pix_icon('i/group', ''));
        }
    }
    $chatusers = chat_get_users($cm->instance, $currentgroup, $cm->groupingid);
    if (is_array($chatusers) && count($chatusers) > 0) {
        $users = $navigation->add(get_string('currentusers', 'chat'));
        foreach ($chatusers as $chatuser) {
            $userlink = new moodle_url('/user/view.php', array('id' => $chatuser->id, 'course' => $course->id));
            $users->add(fullname($chatuser) . ' ' . format_time(time() - $chatuser->lastmessageping), $userlink, navigation_node::TYPE_USER, null, null, new pix_icon('i/user', ''));
        }
    }
}

 /**
  * Get the list of users in the given chat session.
  *
  * @param int $chatsid the chat session id
  * @return array of warnings and the user lists
  * @since Moodle 3.0
  * @throws moodle_exception
  */
 public static function get_chat_users($chatsid)
 {
     global $DB, $PAGE;
     $params = self::validate_parameters(self::get_chat_users_parameters(), array('chatsid' => $chatsid));
     $warnings = array();
     // Request and permission validation.
     if (!($chatuser = $DB->get_record('chat_users', array('sid' => $params['chatsid'])))) {
         throw new moodle_exception('notlogged', 'chat');
     }
     $chat = $DB->get_record('chat', array('id' => $chatuser->chatid), '*', MUST_EXIST);
     list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
     $context = context_module::instance($cm->id);
     self::validate_context($context);
     require_capability('mod/chat:chat', $context);
     // First, delete old users from the chats.
     chat_delete_old_users();
     $users = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid);
     $returnedusers = array();
     foreach ($users as $user) {
         $userpicture = new user_picture($user);
         $userpicture->size = 1;
         // Size f1.
         $profileimageurl = $userpicture->get_url($PAGE)->out(false);
         $returnedusers[] = array('id' => $user->id, 'fullname' => fullname($user), 'profileimageurl' => $profileimageurl);
     }
     $result = array();
     $result['users'] = $returnedusers;
     $result['warnings'] = $warnings;
     return $result;
 }

    } else {
        $groupname = ': '.get_string('allparticipants');
    }
} else {
    $groupid = 0;
    $groupname = '';
}

$strchat  = get_string('modulename', 'chat'); // must be before current_language() in chat_login_user() to force course language!!!
$strchats = get_string('modulenameplural', 'chat');
$stridle  = get_String('idle', 'chat');
if (!$chat_sid = chat_login_user($chat->id, 'basic', $groupid, $course)) {
    print_error('cantlogin', 'chat');
}

if (!$chatusers = chat_get_users($chat->id, $groupid, $cm->groupingid)) {
    print_error('errornousers', 'chat');
}

$DB->set_field('chat_users', 'lastping', time(), array('sid'=>$chat_sid));

if (!isset($SESSION->chatprefs)) {
    $SESSION->chatprefs = array();
}
if (!isset($SESSION->chatprefs[$chat->id])) {
    $SESSION->chatprefs[$chat->id] = array();
    $SESSION->chatprefs[$chat->id]['chatentered'] = time();
}
$chatentered = $SESSION->chatprefs[$chat->id]['chatentered'];

$refreshedmessage = '';

                    $send_user_list = true;
                }
                if ($html = chat_format_message_theme($message, $chatuser, $USER, $cm->groupingid, $theme)) {
                    $message->mymessage = $USER->id == $message->userid;
                    $message->message = $html->html;
                    if (!empty($html->type)) {
                        $message->type = $html->type;
                    }
                } else {
                    unset($messages[$n]);
                }
            }
        }
        if ($send_user_list) {
            // return users when system message coming
            $users = chat_format_userlist(chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid), $course);
            $response['users'] = $users;
        }
        $DB->set_field('chat_users', 'lastping', time(), array('id' => $chatuser->id));
        $response['lasttime'] = $chat_newlasttime;
        $response['lastrow'] = $chat_newrow;
        if ($messages) {
            $response['msgs'] = $messages;
        }
        echo json_encode($response);
        header('Content-Length: ' . ob_get_length());
        ob_end_flush();
        break;
    default:
        break;
}

     } else {
         // show some error message
         require_capability('mod/chat:chat', $context);
     }
 }
 if ($chat->chattime and $chat->schedule) {
     // A chat is scheduled
     echo "<p class=\"nextchatsession\">{$strnextsession}: " . userdate($chat->chattime) . ' (' . usertimezone($USER->timezone) . ')</p>';
 } else {
     echo '<br />';
 }
 if ($chat->intro) {
     print_box(format_text($chat->intro), 'generalbox', 'intro');
 }
 chat_delete_old_users();
 if ($chatusers = chat_get_users($chat->id, $currentgroup)) {
     $timenow = time();
     print_simple_box_start('center');
     print_heading($strcurrentusers);
     echo '<table id="chatcurrentusers">';
     foreach ($chatusers as $chatuser) {
         $lastping = $timenow - $chatuser->lastmessageping;
         echo '<tr><td class="chatuserimage">';
         echo "<a href=\"{$CFG->wwwroot}/user/view.php?id={$chatuser->id}&amp;course={$chat->course}\">";
         print_user_picture($chatuser->id, 0, $chatuser->picture, false, false, false);
         echo '</a></td><td class="chatuserdetails">';
         echo '<p>';
         echo fullname($chatuser) . '<br />';
         echo "<span class=\"idletime\">{$stridle}: " . format_time($lastping) . "</span>";
         echo '</p>';
         echo '</td></tr>';

        $groupname = ': ' . $group->name;
    } else {
        $groupname = ': ' . get_string('allparticipants');
    }
} else {
    $groupid = 0;
    $groupname = '';
}
$strchat = get_string('modulename', 'chat');
// must be before current_language() in chat_login_user() to force course language!!!
$strchats = get_string('modulenameplural', 'chat');
$stridle = get_String('idle', 'chat');
if (!($chat_sid = chat_login_user($chat->id, 'basic', $groupid, $course))) {
    error('Could not log in to chat room!!');
}
if (!($chatusers = chat_get_users($chat->id, $groupid))) {
    error(get_string('errornousers', 'chat'));
}
set_field('chat_users', 'lastping', time(), 'sid', $chat_sid);
if (!isset($SESSION->chatprefs)) {
    $SESSION->chatprefs = array();
}
if (!isset($SESSION->chatprefs[$chat->id])) {
    $SESSION->chatprefs[$chat->id] = array();
    $SESSION->chatprefs[$chat->id]['chatentered'] = time();
}
$chatentered = $SESSION->chatprefs[$chat->id]['chatentered'];
$refreshedmessage = '';
if (!empty($refresh) and data_submitted()) {
    $refreshedmessage = $message;
    chat_delete_old_users();

    $message->chatid = $chatuser->chatid;
    $message->userid = $chatuser->userid;
    $message->groupid = $chatuser->groupid;
    $message->message = "beep {$beep}";
    $message->system = 0;
    $message->timestamp = time();
    $DB->insert_record('chat_messages', $message);
    $DB->insert_record('chat_messages_current', $message);
    $chatuser->lastmessageping = time();
    // A beep is a ping  ;-)
}
$chatuser->lastping = time();
$DB->set_field('chat_users', 'lastping', $chatuser->lastping, array('id' => $chatuser->id));
$refreshurl = "users.php?chat_sid={$chat_sid}";
/// Get list of users
if (!($chatusers = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid))) {
    print_error('errornousers', 'chat');
}
$uidles = array();
$i = 0;
foreach ($chatusers as $chatuser) {
    $uidles[$i] = 'uidle{$chatuser->id}';
    $i++;
}
$PAGE->requires->data_for_js('uidles', $uidles)->in_head();
$PAGE->requires->js('mod/chat/gui_header_js/chat_gui_header.js')->in_head();
// Use ob to support Keep-Alive
ob_start();
print_header('', '', '', '', '', false, '', '', false, 'onload="start()" onunload="stop()"');
/// Print user panel body
$timenow = time();

    /**
     * Get the list of users in the given chat session.
     *
     * @param int $chatsid the chat session id
     * @return array of warnings and the user lists
     * @since Moodle 3.0
     * @throws moodle_exception
     */
    public static function get_chat_users($chatsid) {
        global $DB;

        $params = self::validate_parameters(self::get_chat_users_parameters(),
                                            array(
                                                'chatsid' => $chatsid
                                            ));
        $warnings = array();

        // Request and permission validation.
        if (!$chatuser = $DB->get_record('chat_users', array('sid' => $params['chatsid']))) {
            throw new moodle_exception('notlogged', 'chat');
        }
        $chat = $DB->get_record('chat', array('id' => $chatuser->chatid), '*', MUST_EXIST);
        list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');

        $context = context_module::instance($cm->id);
        self::validate_context($context);

        require_capability('mod/chat:chat', $context);

        // First, delete old users from the chats.
        chat_delete_old_users();

        $users = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid);
        $returnedusers = array();

        foreach ($users as $user) {
            $usercontext = context_user::instance($user->id, IGNORE_MISSING);
            $profileimageurl = '';

            if ($usercontext) {
                $profileimageurl = moodle_url::make_webservice_pluginfile_url(
                                    $usercontext->id, 'user', 'icon', null, '/', 'f1')->out(false);
            }

            $returnedusers[] = array(
                'id' => $user->id,
                'fullname' => fullname($user),
                'profileimageurl' => $profileimageurl
            );
        }

        $result = array();
        $result['users'] = $returnedusers;
        $result['warnings'] = $warnings;
        return $result;
    }