How to Implement Multiple Choice Questions in Online Quizzes Using PHP

How to Implement Multiple Choice Questions in Online Quizzes Using PHP

In modern education, online quizzes have become a common method of learning. Multiple-choice questions, as one of the question types, are an effective way to assess students' knowledge. This article will use code examples to demonstrate how to implement multiple-choice questions in online quizzes.

Creating the Quiz Interface

First, we need to create a simple webpage interface for students to answer questions. Here’s a simple HTML code example:

        for (var i = 0; i < checkboxes.length; i++) {
            if (checkboxes[i].checked) {
                userAnswer.push(checkboxes[i].value);
            }
        }

        // Compare user answers with correct answers
        var isCorrect = userAnswer.length === correctAnswer.length && userAnswer.every((value, index) => value === correctAnswer[index]);

        if (isCorrect) {
            alert("Correct Answer!");
        } else {
            alert("Incorrect Answer!");
        }

        // Additional operations, such as score calculation, can be added here
    }
</script>

Feature Explanation

The code above creates a simple webpage interface containing a multiple-choice question where users need to select the correct answers from four options. After clicking the submit button, the program retrieves the user's answers and compares them with the predefined correct answers. If the answers are correct, it displays "Correct Answer!"; otherwise, it shows "Incorrect Answer!".

JavaScript Code Breakdown

In the JavaScript code, we use the document.getElementsByName method to get all checkboxes with the name question1. Then, we loop through these checkboxes to determine which ones are selected, storing the user's answers in the userAnswer array. Finally, we compare the length and each element of userAnswer with correctAnswer to determine if the user's answers are correct.

Extended Features

In addition to the basic answer checking functionality, you can add other features to the code, such as displaying the correct answers, calculating scores, etc., to enhance the user experience.

Conclusion

With the code examples in this article, you can easily implement the multiple-choice question feature in online quizzes. This feature can be used not only for online exams but also in various interactive learning platforms. We hope this article will assist you in implementing an online quiz system.