Multiplication Practice: Multiply and verify numbers taken from forms

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Not yet rated by the users				Total: 83		All time: 10,036 This week: 206

Version		License		PHP version		Categories
`multiplication-pract` 1.0		The PHP License		5		PHP 5, Math

Description

Author

Gary Fuller

This class can multiply and verify numbers taken from forms.

It takes an array with values taken from a submitted form that takes two numbers and a result of multiplication and another for the sum.

The class verifies if the multiplication and sum are correct.

Gary Fuller

Name:	Gary Fuller `<contact>`
Classes:	1 package by Gary Fuller
Country:	United Kingdom
Age:	???
All time rank:	4437	194 in United Kingdom
Week rank:	295	13 in United Kingdom

Example


<html>

  <head>

    <meta charset="UTF-8">

    <title></title>

  </head>

  <body>

<?php

// Clean up the post data and set it as the variable $post_data.

$post_data = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);

// Include the class file.

require_once('class.multiplication.php');

// Define the numbers to use in the calculations.

$number_array = [0,1,2,3,4,5,6,7,8,9,10,11,12];

// Pick two random numbers for the sum.

$first_number = array_rand($number_array);

$second_number = array_rand($number_array);

// If an answer has been posted, check that it is correct.

if(isset($post_data)) {

    // Instantiate the class passing in the post data as an argument.

    $test = new randomMultiplicationChecker($post_data);

    // Call the answerCheck method and create the variables $correct and $number_correct from what it returns.

    list($correct, $number_correct, $question_number, $level_number) = $test->answerCheck();

} else {

    $question_number = 1;

    $level_number = 1;

    $number_correct = 0;

}

?>



<?php 

// If this is the first time the page has been loaded or the previous answer was correct, 

// show the form and a new question.

if(!isset($post_data) || $correct === true): ?>

<h1>Level <?php echo $level_number; ?> : Question <?php echo $question_number; ?></h1>

<p>Input your answer and click submit before you run out of time...</p>

<p>What is <?php echo $first_number ?> x <?php echo $second_number ?>?</p>

    <form id="answer" method="post" action="<?php $_SERVER["PHP_SELF"]; ?>">

      <input type="text" name="sumAnswer">

      <input type="hidden" value="<?php echo $first_number ?>" name="firstNumber">

      <input type="hidden" value="<?php echo $second_number ?>" name="secondNumber">

      <input type="hidden" value="<?php echo $number_correct ?>" name="numberCorrect">

      <input type="hidden" value="<?php echo $question_number ?>" name="questionNumber">

      <input type="hidden" value="<?php echo $level_number ?>" name="levelNumber">

      <input type="submit">

    </form>

<?php else: ?>

<h1>Nice Try! You got <?php echo $number_correct; ?> correct!</h1>

<?php endif; ?>

  </body>

</html>