interface.iQuestionCondition.php

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<?php
interface iQuestionCondition
{
    const StringResultExpression = '~TEXT~';
    const PercentageResultExpression = '%n%';
    const NumericResultExpression = '#n#';
    const MatchingResultExpression = ';n:m;';
    const OrderingResultExpression = '$n,m,o,p$';
    const NumberOfResultExpression = '+n+';
    const ExclusiveResultExpression = '*n,m,o,p*';
    const EmptyAnswerExpression = "?";

    public function getOperators($expression);

    public function getExpressionTypes();

    public function getUserQuestionResult($active_id, $pass);

    public function getAvailableAnswerOptions($index = null);
}