dongyulan6251 2014-07-19 23:35
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PHP - 奇怪的一个

I am trying to create a "find the odd word" application (given a list of words like cat, dog, bird and car, the latter is the odd one because it's not an animal).

Firstly, I retrieve and shuffle randomly five words from the DB. They are called: odd (which is the odd one), one, two, three, four (which are the other four).

Then, I produce a form (radio button) with the five words, so that users can select one of their choice:

$words = array
(
    $odd,
    $one,
    $two,
    $three,
    $four,
);
shuffle($words);

foreach ($words as $word)
   {
     $string = $word;
     echo '<html><input type="radio" name="odd" value="'.$string.'">'.$string.'<br><br></html>';
   }

In the next PHP page, I want to check if the selected word is the odd one. I can't figure out how to do it. Any suggestions? Thanks!

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  • dongxun1142 2014-07-19 23:48
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    Use the $_SESSION variable to handle this to find out if the odd was selected or not

    Say the following code is from your Odd.php that displays the radio buttons (assuming you would handle the form element and submit button)

    <?php
    session_start();
    $_SESSION['odd'] = $odd;

    $words = array
    (
        $odd,
        $one,
        $two,
        $three,
        $four,
    );

    shuffle($words);
    echo '<form method="POST" action="Next.php">';
    foreach ($words as $word)
    {
        $string = $word;
        echo '<input type="radio" name="odd" value="'.$string.'">'.$string.'<br><br>';
    }
    echo '<input type="submit" /></form>';
?>

    On your Next.php file use the code below to validate if the odd was selected or not

    <?php
    session_start();
    $odd = $_SESSION['odd'];
    if ($_REQUEST['odd'] == $odd) { // $_REQUEST handles both $_POST and $_GET
        echo "Odd was selected";
    } else {
        echo "Odd was not selected";
    }
?>

    Hope this helps!

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