Captcha met berekening

PHP versie: >= 4.1.0

Broncode

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 100

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 106

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 112

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 119

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 120

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 121

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 199

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 287

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 288

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 289

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 290

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/jorendew/phphulp/inc/class.ubb.php on line 291

Code

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<?php
ini_set('display_errors', 'On');
error_reporting(E_ALL);

session_start();

$aValues = array('nul', 'één', 'twee', 'drie', 'vier', 'vijf', 'zes', 'zeven', 'acht', 'negen');
$aOperators = array('plus', 'min', 'maal');

if($_SERVER['REQUEST_METHOD'] == 'POST')
{
    if($_POST['answer'] == $_SESSION['iAnswer'])
    {
        $content[] = '<p>Je hebt de juiste waarde ingevuld<p>';
    }
    else
    {
        $content[] = '<p>Captcha niet juist ingevuld!</p>';
    }
}

$aRandValueKeys = array_rand($aValues, 2);
$iRandOperatorKey = array_rand($aOperators);

$_SESSION['sQuestion'] = 'Hoeveel is '.$aValues[$aRandValueKeys[0]].' '.$aOperators[$iRandOperatorKey].' '.$aValues[$aRandValueKeys[1]].' als getal?';
switch($iRandOperatorKey)
{
    case 0 : $_SESSION['iAnswer'] = $aRandValueKeys[0] + $aRandValueKeys[1]; break;
    case 1 : $_SESSION['iAnswer'] = $aRandValueKeys[0] - $aRandValueKeys[1]; break;
    case 2 : $_SESSION['iAnswer'] = $aRandValueKeys[0] * $aRandValueKeys[1]; break;
}

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>PHPtuts.nl - PHP Snippets - Captcha</title>

    <link rel="stylesheet" href="../../styles/default.css" type="text/css" media="screen" />
    <link rel="stylesheet" href="../../styles/ubb.css" type="text/css" media="screen" />
</head>
<body>
    <div id="wrap">
        <p class="none small align-right"><a href="/codeSnippets/"><-- Terug naar Snippets</a></p>
        <h1>Captcha met berekening</h1>
        <div id="info">
            <p>PHP versie: >= 4.1.0</p>
        </div>

        <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
        <label class="field"><?php echo $_SESSION['sQuestion']; ?></label>
        <input type="text" name="answer" class="none" size="4" />
        <input type="submit" value="Controleren" />
        </form>

        <?php
        // Weergeven van meldingen uit het phpscript.
        if(isset($errors))
        {
            echo '<ul>';
            foreach($errors as $error);
            {
                echo '<li>'.$error.'</li>';
            }
            echo '</ul>';
        }
        elseif(isset($content))
        {
            foreach($content as $line)
            {
                echo $line;
            }
        }

        // Weergeven broncode
        define('FILE', __FILE__);
        require_once('../broncode.php');
        ?>
    </div>


<script type="text/javascript" src="/inc/ga1.js"></script>
<script type="text/javascript" src="/inc/ga2.js"></script>

</body>
</html>