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diff --git a/content/posts/2006-03-04-using-akismet-in-php4-to-defeat-comment-spam.html b/content/posts/2006-03-04-using-akismet-in-php4-to-defeat-comment-spam.html new file mode 100644 index 0000000..6de39cb --- /dev/null +++ b/content/posts/2006-03-04-using-akismet-in-php4-to-defeat-comment-spam.html @@ -0,0 +1,46 @@ +--- +date: "2006-03-04T04:00:46Z" +title: Using Akismet in PHP4 to Defeat Comment Spam +--- + +<p>I've been having comment spam problems on <a href="http://paulduncan.org/" title="All my non-tech-related posts.">my personal page</a>. +<a href="http://wordpress.org/" title="Wordpress, the popular PHP-based blogging tool.">Wordpress</a> uses <a href="http://akismet.com/" title="Anti-spam system used by Wordpress.">Akismet</a> for comment spam filtering now-a-days, +and there are <a href="http://akismet.com/development/" title="Akismet bindings for several popular programming languages.">bindings</a> for several languages, including <a href="http://php.net/" title="Version 4 of the PHP programming language."><acronym title="PHP: Hypertext Preprocessor">PHP</acronym>5</a>, +<a href="http://kemayo.wordpress.com/2005/12/02/akismet-py/" title="Akismet bindings for Python.">Python</a>, and <a href="http://www.blojsom.com/blog/nerdery/2005/12/02/Akismet-API-in-Ruby.html" title="Akismet bindings for Ruby.">Ruby</a>. The <a href="http://akismet.com/development/api/" title="Akismet API documentation.">Akismet <acronym title="Application Programming Interface">API</acronym> documentation</a> +documentation has a <a href="http://php.net/" title="Version 4 of the PHP programming language."><acronym title="PHP: Hypertext Preprocessor">PHP</acronym>4</a>-friendly code snippet, but a quick +<a href="http://google.com/" title="The infamouse Google search engine.">Google</a> search didn't turn up any full-blown <a href="http://php.net/" title="Version 4 of the PHP programming language."><acronym title="PHP: Hypertext Preprocessor">PHP</acronym>4</a> bindings, +so I wrote my own. Here's an example of the <acronym title="Application Programming Interface">API</acronym>:</p> + +<pre><code># +# Check comment using Akismet (http://akismet.com/). Returns true for +# spam, and false for ham. +# +function is_comment_spam($news_id, $name, $email, $url, $comment) { + global $AKISMET_CONFIG; + + # populate comment information + $comment_data = array( + 'user_ip' => $_SERVER['REMOTE_ADDR'], + 'user_agent' => $_SERVER['HTTP_USER_AGENT'], + 'referrer' => $_REQUEST['REFERER'], + 'permalink' => "http://paulduncan.org/?id=$news_id", + 'comment_type' => 'comment', + 'comment_author' => $name, + 'comment_author_email' => $email, + 'comment_author_url' => $url, + 'comment_content' => $comment, + ); + + # create akismet handle + $ak = new Akismet($AKISMET_CONFIG['api_key'], + $AKISMET_CONFIG['blog']); + + # return akismet result (true for spam, false for ham) + return $ak->check_comment($comment_data); +} +</code></pre> + +<p><a href="http://pablotron.org/files/akismet-php4-0.1.0.tar.gz" title="Download a tarball of my PHP4 Akismet bindings.">Download php4-akismet-0.1.tar.gz</a> (<a href="http://pablotron.org/files/akismet-php4-0.1.0.tar.gz.asc" title="OpenPGP signature for version 0.1.0 of my PHP4 Akismet bindings.">Signature</a>)</p> + +<p><b>Update:</b> Fixed a minor typo in the example.</p> + |