get_options(); if ($options) { if ($options['post'] || $options['page']) add_filter('the_content', array(&$this, 'SEOLinks_the_content_filter'), 10); if ($options['comment']) add_filter('comment_text', array(&$this, 'SEOLinks_comment_text_filter'), 10); } add_action( 'create_category', array(&$this, 'SEOLinks_delete_cache')); add_action( 'edit_category', array(&$this,'SEOLinks_delete_cache')); add_action( 'edit_post', array(&$this,'SEOLinks_delete_cache')); add_action( 'save_post', array(&$this,'SEOLinks_delete_cache')); // Add Options Page add_action('admin_menu', array(&$this, 'SEOLinks_admin_menu')); if ($options['notice']) add_action('admin_notices', array(&$this,'admin_notice')); } function admin_notice() { echo '

SEO Smart Links Premium is now available with bug fixes, new features and performance improvements. What is new?

hide

'; } function SEOLinks_process_text($text, $mode) { global $wpdb, $post; $options = $this->get_options(); $links=0; if (is_feed() && !$options['allowfeed']) return $text; else if ($options['onlysingle'] && !(is_single() || is_page())) return $text; $arrignorepost=$this->explode_trim(",", ($options['ignorepost'])); if (is_page($arrignorepost) || is_single($arrignorepost)) { return $text; } if (!$mode) { if ($post->post_type=='post' && !$options['post']) return $text; else if ($post->post_type=='page' && !$options['page']) return $text; if (($post->post_type=='page' && !$options['pageself']) || ($post->post_type=='post' && !$options['postself'])) { $thistitle=$options['casesens'] ? $post->post_title : strtolower($post->post_title); $thisurl=trailingslashit(get_permalink($post->ID)); } else { $thistitle=''; $thisurl=''; } } $maxlinks=($options['maxlinks']>0) ? $options['maxlinks'] : 0; $maxsingle=($options['maxsingle']>0) ? $options['maxsingle'] : -1; $maxsingleurl=($options['maxsingleurl']>0) ? $options['maxsingleurl'] : 0; $minusage = ($options['minusage']>0) ? $options['minusage'] : 1; $urls = array(); $arrignore=$this->explode_trim(",", ($options['ignore'])); if ($options['excludeheading'] == "on") { //Here insert special characters $text = preg_replace('%()(.*?)()%sie', "'\\1'.insertspecialchars('\\2').'\\3'", $text); } // $reg_post = $options['casesens'] ? '/(?!(?:[^<]+>|[^>]+<\/a>))($name)/msU' : '/(?!(?:[^<]+>|[^>]+<\/a>))($name)/imsU'; // $reg = $options['casesens'] ? '/(?!(?:[^<]+>|[^>]+<\/a>))\b($name)\b/msU' : '/(?!(?:[^<]+>|[^>]+<\/a>))\b($name)\b/imsU'; $reg_post = $options['casesens'] ? '/(?!(?:[^<\[]+[>\]]|[^>\]]+<\/a>))($name)/msU' : '/(?!(?:[^<\[]+[>\]]|[^>\]]+<\/a>))($name)/imsU'; $reg = $options['casesens'] ? '/(?!(?:[^<\[]+[>\]]|[^>\]]+<\/a>))\b($name)\b/msU' : '/(?!(?:[^<\[]+[>\]]|[^>\]]+<\/a>))\b($name)\b/imsU'; $strpos_fnc = $options['casesens'] ? 'strpos' : 'stripos'; $text = " $text "; // custom keywords if (!empty($options['customkey'])) { $kw_array = array(); // thanks PK for the suggestion foreach (explode("\n", $options['customkey']) as $line) { if($options['customkey_preventduplicatelink'] == TRUE) { //Prevent duplicate links for grouped custom keywords $line = trim($line); $lastDelimiterPos=strrpos($line, ','); $url = substr($line, $lastDelimiterPos + 1 ); $keywords = substr($line, 0, $lastDelimiterPos); if(!empty($keywords) && !empty($url)){ $kw_array[$keywords] = $url; } $keywords=''; $url=''; } else { //Old custom keywords behaviour $chunks = array_map('trim', explode(",", $line)); $total_chuncks = count($chunks); if($total_chuncks > 2) { $i = 0; $url = $chunks[$total_chuncks-1]; while($i < $total_chuncks-1) { if (!empty($chunks[$i])) $kw_array[$chunks[$i]] = $url; $i++; } } else { list($keyword, $url) = array_map('trim', explode(",", $line, 2)); if (!empty($keyword)) $kw_array[$keyword] = $url; } } } foreach ($kw_array as $name=>$url) { if ((!$maxlinks || ($links < $maxlinks)) && (trailingslashit($url)!=$thisurl) && !in_array( $options['casesens'] ? $name : strtolower($name), $arrignore) && (!$maxsingleurl || $urls[$url]<$maxsingleurl) ) { if (($options['customkey_preventduplicatelink'] == TRUE) || $strpos_fnc($text, $name) !== false) { // credit to Dominik Deobald -- TODO: change string search for preg_match $name= preg_quote($name, '/'); if($options['customkey_preventduplicatelink'] == TRUE) $name = str_replace(',','|',$name); //Modifying RegExp for count all grouped keywords as the same one $replace="$1"; $regexp=str_replace('$name', $name, $reg); //$regexp="/(?!(?:[^<]+>|[^>]+<\/a>))(?posts WHERE post_status = 'publish' AND LENGTH(post_title)>3 ORDER BY LENGTH(post_title) DESC LIMIT 2000"; $posts = $wpdb->get_results($query); wp_cache_add( 'seo-links-posts', $posts, 'seo-smart-links', 86400 ); } foreach ($posts as $postitem) { if ((($options['lposts'] && $postitem->post_type=='post') || ($options['lpages'] && $postitem->post_type=='page')) && (!$maxlinks || ($links < $maxlinks)) && (($options['casesens'] ? $postitem->post_title : strtolower($postitem->post_title))!=$thistitle) && (!in_array( ($options['casesens'] ? $postitem->post_title : strtolower($postitem->post_title)), $arrignore)) ) { if ($strpos_fnc($text, $postitem->post_title) !== false) { // credit to Dominik Deobald $name = preg_quote($postitem->post_title, '/'); $regexp=str_replace('$name', $name, $reg); $replace='$1'; $newtext = preg_replace($regexp, $replace, $text, $maxsingle); if ($newtext!=$text) { $url = get_permalink($postitem->ID); if (!$maxsingleurl || $urls[$url]<$maxsingleurl) { $links++; $text=str_replace('$$$url$$$', $url, $newtext); if (!isset($urls[$url])) $urls[$url]=1; else $urls[$url]++; } } } } } } // categories if ($options['lcats']) { if ( !$categories = wp_cache_get( 'seo-links-categories', 'seo-smart-links' ) ) { $query="SELECT $wpdb->terms.name, $wpdb->terms.term_id FROM $wpdb->terms LEFT JOIN $wpdb->term_taxonomy ON $wpdb->terms.term_id = $wpdb->term_taxonomy.term_id WHERE $wpdb->term_taxonomy.taxonomy = 'category' AND LENGTH($wpdb->terms.name)>3 AND $wpdb->term_taxonomy.count >= $minusage ORDER BY LENGTH($wpdb->terms.name) DESC LIMIT 2000"; $categories = $wpdb->get_results($query); wp_cache_add( 'seo-links-categories', $categories, 'seo-smart-links',86400 ); } foreach ($categories as $cat) { if ((!$maxlinks || ($links < $maxlinks)) && !in_array( $options['casesens'] ? $cat->name : strtolower($cat->name), $arrignore) ) { if ($strpos_fnc($text, $cat->name) !== false) { // credit to Dominik Deobald $name= preg_quote($cat->name, '/'); $regexp=str_replace('$name', $name, $reg); ; $replace='$1'; $newtext = preg_replace($regexp, $replace, $text, $maxsingle); if ($newtext!=$text) { $url = (get_category_link($cat->term_id)); if (!$maxsingleurl || $urls[$url]<$maxsingleurl) { $links++; $text=str_replace('$$$url$$$', $url, $newtext); if (!isset($urls[$url])) $urls[$url]=1; else $urls[$url]++; } } } } } } // tags if ($options['ltags']) { if ( !$tags = wp_cache_get( 'seo-links-tags', 'seo-smart-links' ) ) { $query="SELECT $wpdb->terms.name, $wpdb->terms.term_id FROM $wpdb->terms LEFT JOIN $wpdb->term_taxonomy ON $wpdb->terms.term_id = $wpdb->term_taxonomy.term_id WHERE $wpdb->term_taxonomy.taxonomy = 'post_tag' AND LENGTH($wpdb->terms.name)>3 AND $wpdb->term_taxonomy.count >= $minusage ORDER BY LENGTH($wpdb->terms.name) DESC LIMIT 2000"; $tags = $wpdb->get_results($query); wp_cache_add( 'seo-links-tags', $tags, 'seo-smart-links',86400 ); } foreach ($tags as $tag) { if ((!$maxlinks || ($links < $maxlinks)) && !in_array( $options['casesens'] ? $tag->name : strtolower($tag->name), $arrignore) ) { if ($strpos_fnc($text, $tag->name) !== false) { // credit to Dominik Deobald $name = preg_quote($tag->name, '/'); $regexp=str_replace('$name', $name, $reg); ; $replace='$1'; $newtext = preg_replace($regexp, $replace, $text, $maxsingle); if ($newtext!=$text) { $url = (get_tag_link($tag->term_id)); if (!$maxsingleurl || $urls[$url]<$maxsingleurl) { $links++; $text=str_replace('$$$url$$$', $url, $newtext); if (!isset($urls[$url])) $urls[$url]=1; else $urls[$url]++; } } } } } } if ($options['excludeheading'] == "on") { //Here insert special characters $text = preg_replace('%()(.*?)()%sie', "'\\1'.removespecialchars('\\2').'\\3'", $text); $text = stripslashes($text); } return trim( $text ); } function SEOLinks_the_content_filter($text) { $result=$this->SEOLinks_process_text($text, 0); $options = $this->get_options(); $link=parse_url(get_bloginfo('wpurl')); $host='http://'.$link['host']; if ($options['blanko']) $result = preg_replace('%SEOLinks_process_text($text, 1); $options = $this->get_options(); $link=parse_url(get_bloginfo('wpurl')); $host='http://'.$link['host']; if ($options['blanko']) $result = preg_replace('% 'on', 'postself' => '', 'page' => 'on', 'pageself' => '', 'comment' => '', 'excludeheading' => 'on', 'lposts' => 'on', 'lpages' => 'on', 'lcats' => '', 'ltags' => '', 'ignore' => 'about,', 'ignorepost' => 'contact', 'maxlinks' => 3, 'maxsingle' => 1, 'minusage' => 1, 'customkey' => '', 'customkey_preventduplicatelink' => FALSE, 'nofoln' =>'', 'nofolo' =>'', 'blankn' =>'', 'blanko' =>'', 'onlysingle' => 'on', 'casesens' =>'', 'allowfeed' => '', 'maxsingleurl' => '1', 'notice'=>'1' ); $saved = get_option($this->SEOLinks_DB_option); if (!empty($saved)) { foreach ($saved as $key => $option) $options[$key] = $option; } if ($saved != $options) update_option($this->SEOLinks_DB_option, $options); return $options; } // Set up everything function install() { $SEOLinks_options = $this->get_options(); } function handle_options() { $options = $this->get_options(); if (isset($_GET['notice'])) { if ($_GET['notice']==1) { $options['notice']=0; update_option($this->SEOLinks_DB_option, $options); } } if ( isset($_POST['submitted']) ) { check_admin_referer('seo-smart-links'); $options['post']=$_POST['post']; $options['postself']=$_POST['postself']; $options['page']=$_POST['page']; $options['pageself']=$_POST['pageself']; $options['comment']=$_POST['comment']; $options['excludeheading']=$_POST['excludeheading']; $options['lposts']=$_POST['lposts']; $options['lpages']=$_POST['lpages']; $options['lcats']=$_POST['lcats']; $options['ltags']=$_POST['ltags']; $options['ignore']=$_POST['ignore']; $options['ignorepost']=$_POST['ignorepost']; $options['maxlinks']=(int) $_POST['maxlinks']; $options['maxsingle']=(int) $_POST['maxsingle']; $options['maxsingleurl']=(int) $_POST['maxsingleurl']; $options['minusage']=(int) $_POST['minusage']; // credit to Dominik Deobald $options['customkey']=$_POST['customkey']; $options['customkey_preventduplicatelink']=$_POST['customkey_preventduplicatelink']; $options['nofoln']=$_POST['nofoln']; $options['nofolo']=$_POST['nofolo']; $options['blankn']=$_POST['blankn']; $options['blanko']=$_POST['blanko']; $options['onlysingle']=$_POST['onlysingle']; $options['casesens']=$_POST['casesens']; $options['allowfeed']=$_POST['allowfeed']; update_option($this->SEOLinks_DB_option, $options); $this->SEOLinks_delete_cache(0); echo '

Plugin settings saved.

'; } $action_url = $_SERVER['REQUEST_URI']; $post=$options['post']=='on'?'checked':''; $postself=$options['postself']=='on'?'checked':''; $page=$options['page']=='on'?'checked':''; $pageself=$options['pageself']=='on'?'checked':''; $comment=$options['comment']=='on'?'checked':''; $excludeheading=$options['excludeheading']=='on'?'checked':''; $lposts=$options['lposts']=='on'?'checked':''; $lpages=$options['lpages']=='on'?'checked':''; $lcats=$options['lcats']=='on'?'checked':''; $ltags=$options['ltags']=='on'?'checked':''; $ignore=$options['ignore']; $ignorepost=$options['ignorepost']; $maxlinks=$options['maxlinks']; $maxsingle=$options['maxsingle']; $maxsingleurl=$options['maxsingleurl']; $minusage=$options['minusage']; $customkey=stripslashes($options['customkey']); $customkey_preventduplicatelink=$options['customkey_preventduplicatelink'] == TRUE ? 'checked' : ''; $nofoln=$options['nofoln']=='on'?'checked':''; $nofolo=$options['nofolo']=='on'?'checked':''; $blankn=$options['blankn']=='on'?'checked':''; $blanko=$options['blanko']=='on'?'checked':''; $onlysingle=$options['onlysingle']=='on'?'checked':''; $casesens=$options['casesens']=='on'?'checked':''; $allowfeed=$options['allowfeed']=='on'?'checked':''; if (!is_numeric($minusage)) $minusage = 1; $nonce=wp_create_nonce( 'seo-smart-links'); $imgpath=trailingslashit(get_option('siteurl')). 'wp-content/plugins/seo-automatic-links/i'; echo <<

SEO Smart Links

Overview

SEO Smart Links can automatically link keywords and phrases in your posts and comments with corresponding posts, pages, categories and tags on your blog.

Further SEO Smart links allows you to set up your own keywords and set of matching URLs.

Finally SEO Smart links allows you to set nofollow attribute and open links in new window.

Internal Links

SEO Smart Links can process your posts, pages and comments in search for keywords to automatically interlink.

     

     

(may slow down performance)

Excluding

Target

The targets SEO Smart links should consider. The match will be based on post/page title or category/tag name, case insensitive.



(may slow down performance)
(may slow down performance)

Link tags and categories that have been used at least times.

Settings

To reduce database load you can choose to have SEO SMART links work only on single posts and pages (for example not on main page or archives).



Allow processing of RSS feeds. SEO Smart links will embed links in all posts in your RSS feed (according to other options)



Set whether matching should be case sensitive.


Ignore Posts and Pages

You may wish to forbid automatic linking on certain posts or pages. Seperate them by comma. (id, slug or name)


Ignore keywords

You may wish to ignore certain words or phrases from automatic linking. Seperate them by comma.



Custom Keywords

Here you can enter manually the extra keywords you want to automaticaly link. Use comma to seperate keywords and add target url at the end. Use a new line for new url and set of keywords. You can have these keywords link to any url, not only your site.

Example:
vladimir prelovac, http://www.prelovac.com/vladimir
cars, car, autos, auto, http://mycarblog.com/




Limits

You can limit the maximum number of different links SEO Smart Links will generate per post. Set to 0 for no limit.

Max Links:

You can also limit maximum number of links created with the same keyword. Set to 0 for no limit.

Max Single:

Limit number of same URLs the plugin will link to. Works only when Max Single above is set to 1. Set to 0 for no limit.

Max Single URLs:

External Links

SEO Smart links can open external links in new window and add nofollow attribute.





 

Another fine WordPress plugin by Vladimir Prelovac
END; } function SEOLinks_admin_menu() { add_options_page('SEO Smart Links Options', 'SEO Smart Links', 8, basename(__FILE__), array(&$this, 'handle_options')); } function SEOLinks_delete_cache($id) { wp_cache_delete( 'seo-links-categories', 'seo-smart-links' ); wp_cache_delete( 'seo-links-tags', 'seo-smart-links' ); wp_cache_delete( 'seo-links-posts', 'seo-smart-links' ); } //add_action( 'comment_post', 'SEOLinks_delete_cache'); //add_action( 'wp_set_comment_status', 'SEOLinks_delete_cache'); } endif; if ( class_exists('SEOLinks') ) : $SEOLinks = new SEOLinks(); if (isset($SEOLinks)) { register_activation_hook( __FILE__, array(&$SEOLinks, 'install') ); } endif; function insertspecialchars($str) { $strarr = str2arr($str); $str = implode("", $strarr); return $str; } function removespecialchars($str) { $strarr = explode("", $str); $str = implode("", $strarr); $str = stripslashes($str); return $str; } function str2arr($str) { $chararray = array(); for($i=0; $i < strlen($str); $i++){ array_push($chararray,$str{$i}); } return $chararray; } ?>