本文整理汇总了PHP中Captcha::isGD方法的典型用法代码示例。如果您正苦于以下问题：PHP Captcha::isGD方法的具体用法？PHP Captcha::isGD怎么用？PHP Captcha::isGD使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Captcha的用法示例。
在下文中一共展示了Captcha::isGD方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的PHP代码示例。
示例1: verify
/**
* This is a modification of the freecap_wrap.php file that comes with
* Howard Yeend's freecap CAPTCHA zip. You can get more information at
* http://www.puremango.co.uk/
* Thank you, Mr. Yeend, for sharing your work.
*
* @version $Id$
* @author Howard Yeend
* @modified Matthew McNaney <mcnaney at gmail dot com>
*/
function verify($return_value = false)
{
if (!Captcha::isGD()) {
return false;
}
$answer = trim($_POST['captcha']);
if (!empty($_SESSION['freecap_word_hash'])) {
// all freeCap words are lowercase.
// font #4 looks uppercase, but trust me, it's not...
if ($_SESSION['hash_func'](strtolower($answer)) == $_SESSION['freecap_word_hash']) {
// reset freeCap session vars
// cannot stress enough how important it is to do this
// defeats re-use of known image with spoofed session id
$_SESSION['freecap_attempts'] = 0;
$_SESSION['freecap_word_hash'] = false;
// now process form
// now go somewhere else
// header("Location: somewhere.php");
if ($return_value) {
return $_POST['captcha'];
} else {
return true;
}
} else {
return false;
}
} else {
return false;
}
}示例2:
<?php
/**
* @version $Id$
* @author Matthew McNaney <mcnaney at gmail dot com>
*/
if (!Captcha::isGD()) {
$data['warning'] = _('Your GD graphic library is not loaded. Captcha will not function.');
}
$data['question'] = _('Please copy the word in the above image.');
$data['sid'] = md5(SITE_HASH . $_SERVER['REMOTE_ADDR']);
$_SESSION['ld'] = PHPWS_HOME_DIR;