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<?php
/**
* Simple example
*
* @category Text
* @package Text_CAPTCHA
* @author Christian Wenz <wenz@php.net>
* @author Michael Cramer <michael@bigmichi1.de>
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @link http://pear.php.net/package/Text_CAPTCHA
*/
// Start PHP session support
session_start();
$ok = false;
$msg = 'Please enter the text in the image in the field below!';
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if (isset($_POST['phrase']) && is_string($_SESSION['phrase'])
&& isset($_SESSION['phrase'])
&& strlen($_POST['phrase']) > 0 && strlen($_SESSION['phrase']) > 0
&& $_POST['phrase'] == $_SESSION['phrase']
) {
$msg = 'OK!';
$ok = true;
unset($_SESSION['phrase']);
} else {
$msg = 'Please try again!';
}
unlink(sha1(session_id()) . '.png');
}
print "<p>$msg</p>";
if (!$ok) {
require_once 'Text/CAPTCHA.php';
// Set CAPTCHA image options (font must exist!)
$imageOptions = array(
'font_size' => 24,
'font_path' => './',
'font_file' => 'COUR.TTF',
'text_color' => '#DDFF99',
'lines_color' => '#CCEEDD',
'background_color' => '#555555'
);
// Set CAPTCHA options
$options = array(
'width' => 200,
'height' => 80,
'output' => 'png',
'imageOptions' => $imageOptions
);
// Generate a new Text_CAPTCHA object, Image driver
$c = Text_CAPTCHA::factory('Image');
$c->init($options);
// Get CAPTCHA secret passphrase
$_SESSION['phrase'] = $c->getPhrase();
// Get CAPTCHA image (as PNG)
$png = $c->getCAPTCHA();
file_put_contents(sha1(session_id()) . '.png', $png);
echo '<form method="post">' .
'<img src="' . sha1(session_id()) . '.png?' . time() . '" />' .
'<input type="text" name="phrase" />' .
'<input type="submit" /></form>';
}
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