CODEWITHSUNDEEP
php
Malley Baker
Malley Baker

Reputation: 11

Die Rolling Program php

I am in a class at IUPUI and I was given these instructions

  1. In NetBeans, create a new PHP Web Page named index.php in the htdocs\I210\Lab04 folder.
  2. Change the document title to “Statistical analysis of results from rolling a six‐sided die”;

  3. At the very top of the page, add the following PHP code block and comments.

    <?php
/*
 * Author: Your name
 * Date: Today’s date
 */
?>

  4. Inside the body section, create a H2 heading that reads “Statistical analysis of results from rolling a six‐sided die” at the beginning of the page body.

  5. Inside the PHP code block, create six variables to store the frequency of each side of the die. Choose your variable names wisely. For example, you may name them $frequency1, $frequency2 ……

  6. To simulate rolling a die, use the built‐in PHP function named rand($min, $max) to generate a random number between 1 and 6, 1 being Face 1, 2 being Face 2, and so on. The following statement generates a random number between 1 and 6 and stores it in the variable called $face. $face = rand(1, 6);

  7. Use a conditional structure (IF or SWITCH) to increment frequency for each side of the die occurred. For example, if the value of $face is 1, increment $frequence1 by 1.

  8. Use a loop structure (FOR, WHILE, or DO … WHILE) to repeatedly execute the PHP statements in the last two steps 5000 times.
  9. Use a table to display die faces and their frequencies occurred during the 5000 times of rolls.

  10. Below the table, add a refresh button.

    <input type="submit" value="Refresh" onclick="window.location.reload()" />

  11. Add CSS to center everything on the page.

  12. Thoroughly test your page. Clicking the “refresh” button should generate a new set of frequencies. Note: your frequencies could be different from mine."

I'm not asking for someone to do the work for me because I have most of the work done. I can't seem to figure out how to make my code loop 5000 times. This is my code currently.

<!DOCTYPE html>
<html>
    <head>
        <title>Statistical analysis of results from rolling a six‐sided die</title>
    </head>
    <body>
        <h2>Statistical analysis of results from rolling a six‐sided die</h2>
        <?php
        $frequency1=0;
        $frequency2=0;
        $frequency3=0;
        $frequency4=0;
        $frequency5=0;
        $frequency6=0;
        $face = rand(1, 6);

if ($face==1)
{
++$frequency1;
}
else if ($face==2) {
    ++$frequency2;
}
else if ($face==3) {
    ++$frequency3;
}else if ($face==4) {
    ++$frequency4;
}else if ($face==5) {
    ++$frequency5;
}else if ($face==6) {
    ++$frequency6;
}
 echo "<table>
            <tr>
                <th>Face</th>
                <th>Frequency</th>
            </tr>";
            $face_num=6;
            $face_count=1; 
            while ($face_count<=$face_num) {
                    $frequency = ${'frequency' . $face_count};
                echo "<tr>
                        <td> $face_count </td>
                        <td> $frequency </td>
                     </tr>";

                $face_count++;
                }
            ?>
        </table>
        <input type="submit" value="Refresh" onclick="window.location.reload()" />  
    </body>
</html>

Upvotes: 0

Views: 761

Answers (1)

Jaquarh
Jaquarh

Reputation: 6693

You can use a for() loop to execute the code 5000 times.

$frequency = [0, 0, 0, 0, 0, 0];

for($i = 1; $i <= 5000; $i++):
    $face = rand(0, 5); // index's start at 0
    ++$frequency[$face];
endfor;

for($i = 0; $i <= count($frequency) -1; $i++):
    $n = $i +1;
    echo "Frequency {$n} is equal to {$frequency[$i]}";
endfor;

for readability, I added the use of an array so its easier to manage in the future.

Running this code 10 times (not 5000) gives a result like this:

Frequency 1 is equal to 1
Frequency 2 is equal to 3
Frequency 3 is equal to 1
Frequency 4 is equal to 3
Frequency 5 is equal to 1
Frequency 6 is equal to 1

Note: You will need to implement this into your own view.

Here is an example of a view:

$frequency = [0, 0, 0, 0, 0, 0];

echo "<table>";

for($i = 1; $i <= 10; $i++):
    $face = rand(0, 5);
    ++$frequency[$face];
    echo "<tr>";
    echo "<th>";
    echo "Face";
    echo "</th>";
    echo "<th>";
    echo "Frequency";
    echo "</th>";
    echo "</tr>";
    echo "<tr>";
    echo "<th>";
    echo "{$face}";
    echo "</th>";
    echo "<th>";
    echo "{$frequency[$face]}";
    echo "</th>";
    echo "</tr>";
endfor;

echo "</table>";

Example

Upvotes: 1

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