View difference between Paste ID: z5HHv6hD and 4FGpJpvn

 <?php
 /***
 	* Plugin Name: bbPress AutoTagger
 	* Plugin URI:  http://example.org/
 	* Description: --- description here --
 	* Version:     1.0
 	* Author:      Shmoo
 	* Author URI:  http://example.org/
 	* License:     Same as WordPress I guess.
 ***/
 
 add_action( 'bbp_new_topic',  'shmoo_auto_save_tags', 10, 1 );
 add_action( 'bbp_edit_topic', 'shmoo_auto_save_tags', 10, 1 );
 
 
 function shmoo_auto_save_tags( $topic_id ) {
 
-	$topic_id = 0;
+	// Get all bbPress topic tags inside an array + strip them to plain text
         $bbp_topic_tags = wp_tag_cloud( array( 'format' => 'array', 'taxonomy' => 'topic-tag' ) );
-// Topic Tags
+
                 function tag_stripper( &$items, $format ) {
 
-        // Get all bbPress topic tags inside an array + strip them to plain text
+
 
                 }
                 array_walk( $bbp_topic_tags, 'tag_stripper' );
 
 
 // Topic Content
 
 
         // Get the topic content
         $bbp_topic_content = bbp_get_topic_content( $topic_id );
 
 
 // Match Topics Tags against Topic Content
 
-        $bbp_topic_content = bbp_get_topic_content();
+
         // Check and echo matches
         $matches = array();
 
         $match_found = preg_match_all( "/\b(" . implode($bbp_topic_tags,"|") . ")\b/i", $bbp_topic_content, $matches );
 
         if ( $match_found ) {
 
         	$words = array_unique( $matches[0] );
 
 					$words = array_unique( array_merge( $words, wp_get_post_terms( $topic_id, bbp_get_topic_tag_tax_id(), array( 'fields' => 'names' ) ) ) );
 						if ( !empty( $words ) )
 							wp_set_post_terms( $topic_id, $words, bbp_get_topic_tag_tax_id(), true );
 
-        		foreach( $words as $word ) {
+
 
 
 }