PHP Exercise::selectStatus方法代码示例

    we delete the objExercise from the session in order to get the latest
    changes in the exercise */
if (api_is_allowed_to_edit(null, true) && isset($_GET['preview']) && $_GET['preview'] == 1) {
    Session::erase('objExercise');
}
// 1. Loading the $objExercise variable
if (!isset($_SESSION['objExercise']) || $_SESSION['objExercise']->id != $_REQUEST['exerciseId']) {
    // Construction of Exercise
    $objExercise = new Exercise();
    Session::write('firstTime', true);
    if ($debug) {
        error_log('1. Setting the $objExercise variable');
    }
    unset($_SESSION['questionList']);
    // if the specified exercise doesn't exist or is disabled
    if (!$objExercise->read($exerciseId) || !$objExercise->selectStatus() && !$is_allowedToEdit && $origin != 'learnpath') {
        if ($debug) {
            error_log('1.1. Error while reading the exercise');
        }
        unset($objExercise);
        $error = get_lang('ExerciseNotFound');
    } else {
        // Saves the object into the session
        Session::write('objExercise', $objExercise);
        if ($debug) {
            error_log('1.1. $_SESSION[objExercise] was unset - set now - end');
        }
    }
} else {
    Session::write('firstTime', false);
}

/**
 * This function exports the given Chamilo test
 * @param    integer    Test ID
 * @return string     The test itself as an HTML string
 */
function export_exercise($item_id)
{
    global $expdir, $_course, $_configuration, $_SESSION, $_SERVER, $language_interface, $langExerciseNotFound, $langQuestion, $langOk, $origin, $questionNum;
    $exerciseId = $item_id;
    require_once '../exercice/exercise.class.php';
    require_once '../exercice/question.class.php';
    require_once '../exercice/answer.class.php';
    $TBL_EXERCISES = Database::get_course_table(TABLE_QUIZ_TEST);
    /* Clears the exercise session */
    if (isset($_SESSION['objExercise'])) {
        Session::erase('objExercise');
    }
    if (isset($_SESSION['objQuestion'])) {
        Session::erase('objQuestion');
    }
    if (isset($_SESSION['objAnswer'])) {
        Session::erase('objAnswer');
    }
    if (isset($_SESSION['questionList'])) {
        Session::erase('questionList');
    }
    if (isset($_SESSION['exerciseResult'])) {
        Session::erase('exerciseResult');
    }
    // If the object is not in the session:
    if (!isset($_SESSION['objExercise'])) {
        // Construction of Exercise.
        $objExercise = new Exercise();
        $sql = "SELECT title,description,sound,type,random,active FROM {$TBL_EXERCISES} WHERE iid='{$exerciseId}'";
        // If the specified exercise doesn't exist or is disabled:
        if (!$objExercise->read($exerciseId) || !$objExercise->selectStatus() && !api_is_allowed_to_edit() && $origin != 'learnpath') {
            die($langExerciseNotFound);
        }
        // Saves the object into the session.
        Session::write('objExercise', $objExercise);
    }
    $exerciseTitle = $objExercise->selectTitle();
    $exerciseDescription = $objExercise->selectDescription();
    $exerciseSound = $objExercise->selectSound();
    $randomQuestions = $objExercise->isRandom();
    $exerciseType = $objExercise->selectType();
    if (!isset($_SESSION['questionList'])) {
        // Selects the list of question ID.
        $questionList = $randomQuestions ? $objExercise->selectRandomList() : $objExercise->selectQuestionList();
        // Saves the question list into the session.
        Session::write('questionList', $questionList);
    }
    $nbrQuestions = sizeof($questionList);
    // If questionNum comes from POST and not from GET:
    if (!$questionNum || $_POST['questionNum']) {
        // Only used for sequential exercises (see $exerciseType).
        if (!$questionNum) {
            $questionNum = 1;
        } else {
            $questionNum++;
        }
    }
    $test .= "<h3>" . $exerciseTitle . "</h3>";
    if (!empty($exerciseSound)) {
        $test .= "<a href=\"../document/download.php?doc_url=%2Faudio%2F" . $exerciseSound . "\"&SQMSESSID=36812c2dea7d8d6e708d5e6a2f09b0b9 target=\"_blank\"><img src=\"../img/sound.gif\" border=\"0\" align=\"absmiddle\" alt=" . get_lang("Sound") . "\" /></a>";
    }
    // Writing the .js file with to check the correct answers begin.
    $scriptfilename = "Exercice" . $item_id . ".js";
    $s = "<script type=\"text/javascript\" src='../js/" . $scriptfilename . "'></script>";
    $test .= $s;
    $content = "function evaluate() {\n        alert('Test evaluated.');\n        }\n        ";
    if (!($handle = fopen($expdir . '/js/' . $scriptfilename, 'w'))) {
        echo "Cannot open file ({$scriptfilename})";
    }
    if (fwrite($handle, $content) === false) {
        echo "Cannot write to file ({$filename})";
        exit;
    }
    fclose($handle);
    // Writing the .js file with to check the correct answers end.
    $s = "\n        <p>{$exerciseDescription}</p>\n        <table width='100%' border='0' cellpadding='1' cellspacing='0'>\n         <form method='post' action=''><input type=\"hidden\" name=\"SQMSESSID\" value=\"36812c2dea7d8d6e708d5e6a2f09b0b9\" />\n         <input type='hidden' name='formSent' value='1' />\n         <input type='hidden' name='exerciseType' value='" . $exerciseType . "' />\n         <input type='hidden' name='questionNum' value='" . $questionNum . "' />\n         <input type='hidden' name='nbrQuestions' value='" . $nbrQuestions . "' />\n         <tr>\n          <td>\n          <table width='100%' cellpadding='4' cellspacing='2' border='0'>";
    $exerciseType = 1;
    // So to list all questions in one page.
    $test .= $s;
    $i = 0;
    foreach ($questionList as $questionId) {
        $i++;
        // For sequential exercises.
        if ($exerciseType == 2) {
            // If it is not the right question, goes to the next loop iteration.
            if ($questionNum != $i) {
                continue;
            } else {
                // if the user has already answered this question:
                if (isset($exerciseResult[$questionId])) {
                    // Construction of the Question object.
                    $objQuestionTmp = new Question();
                    // Reads question informations.
                    $objQuestionTmp->read($questionId);
                    $questionName = $objQuestionTmp->selectTitle();
//.........这里部分代码省略.........

}

//Checks if an exercise ID exists in the URL
//and if so it gets the exercise object either by the session (if it exists there)
//or by initializing it using the exercise ID
if (isset($_REQUEST['exerciseId'])) {
    $exerciseId = intval($_REQUEST['exerciseId']);    
    //  Checks if exercise object exists in the Session
    if (isset($_SESSION['objExercise'][$exerciseId])) {
        $objExercise = $_SESSION['objExercise'][$exerciseId];
    } else {
        // construction of Exercise
        $objExercise = new Exercise();
        // if the specified exercise is disabled (this only applies to students)
        // or doesn't exist redirects and shows error 
        if (!$objExercise->read($exerciseId) || (!$is_editor && $objExercise->selectStatus($exerciseId)==0)) {
            session::Messages($langExerciseNotFound);
            redirect_to_home_page('modules/exercise/index.php?course='.$course_code);
        }
        // saves the object into the session
        $_SESSION['objExercise'][$exerciseId] = $objExercise;        
    }
} else {
    redirect_to_home_page('modules/exercise/index.php?course='.$course_code);
}

//Initialize attempts timestamp
if(isset($_POST['attempt_value']) && !isset($_GET['eurId'])){
    $attempt_value = $_POST['attempt_value'];
}elseif (isset($_GET['eurId'])) { //reinitialize paused attempt
    //If there is a paused attempt get it