Take the tour ×  To get my PHP and Wordpress skills, I've been
trying to code a small plugin a day. Today's project was to
create a plugin that searched over every word in my posts,
checked if http://reddit.com/r/$word was a valid link, and added
the link to the word if it was.  The plugin works correctly for
the first post.  "**trees**" links to
**http://reddit.com/r/trees**  "**php**" links to
**http://reddit.com/r/php**  However, for every other post, the
$word variable does not change.  "**trees**" links to
**http://reddit.com/r/$word**   I've been scratching my head for
the past hour trying to get this plugin to work. Here's the
code:  add_filter('the_content', 'subreddit_replacer');
function subreddit_replacer($content) {    global $id;
$post_id = get_post($id);   $post_content = $post_id ->
post_content;   //delete_post_meta($id, 'jordan'); die;   $derp
= get_post_meta($id, 'jordan');    if (empty($derp)) {   $words
= preg_split('@[\W]+@',$post_content);   $derp = array();
foreach ($words as $word