php中使用Akismet防止垃圾评论的代码

<?
require_once (classes/Akismet.class.php);
class MySpamProtection {
// variables
var $sMyAkismetKey;
var $sWebsiteUrl;
var $sAuthName;
var $sAuthEml;
var $sAuthUrl;
var $oAkismet;
// constructor
public function MySpamProtection() {
// set necessary values for variables
$this->sMyAkismetKey = __YOUR_AKISMET_KEY__;
$this->sWebsiteUrl = __YOUR_WEBSITE_URL__;
$this->sAuthName = __YOUR_NAME__;
$this->sAuthEml = ;
$this->sAuthUrl = ;
// Akismet initialization
$this->oAkismet = new Akismet($this->sWebsiteUrl ,$this->sMyAkismetKey);
$this->oAkismet->setCommentAuthor($this->sAuthName);
$this->oAkismet->setCommentAuthorEmail($this->sAuthEml);
$this->oAkismet->setCommentAuthorURL($this->sAuthUrl);
}
public function isSpam($s) {
if (! $this->oAkismet) return false;
$this->oAkismet->setCommentContent($s);
return $this->oAkismet->isCommentSpam();
}
}
echo <<<EOF
<style type="text/css">
form div {
margin:10px;
}
form label {
width:90px;
float:left;
display:block;
}
</style>
<form action="" method="post">
<div><label for="author">Author</label><input id="author" name="author" type="text" value="" /></div>
<div><label for="comment">Comment</label><textarea id="comment" name="comment" cols="20" rows="4"></textarea></div>
<div><input name="submit" type="submit" value="Send" /></div>
</form>
EOF;
if ($_POST) {
// draw debug information
echo <pre>;
print_r($_POST);
echo </pre>;
// obtain sent info
$sPostAuthor = $_POST[author];
$sCommentComment = $_POST[comment];
// check for spam
$oMySpamProtection = new MySpamProtection();
$sAuthorCheck = ($oMySpamProtection->isSpam($sPostAuthor)) ? "Author" marked as Spam : "Author" not marked as Spam;
$sCommentCheck = ($oMySpamProtection->isSpam($sCommentComment)) ? "Comment" marked as Spam : "Comment" not marked as Spam;
echo $sAuthorCheck . <br /> . $sCommentCheck;
}
?>