source: spip-zone/_plugins_/seo/seo_fonctions.php @ 50173

<?php

/**
 * Renvoyer la balise <link> pour URL CANONIQUES
 * @return string $flux
 */
function generer_urls_canoniques(){
        include_spip('balise/url_');
        
        if (count($GLOBALS['contexte']) == 0) {
                $type_object = 'sommaire';
        } elseif (isSet($GLOBALS['contexte']['id_article'])) {
                $id_object   = $GLOBALS['contexte']['id_article'];
                $type_object = 'article';
        } elseif (isSet($GLOBALS['contexte']['id_rubrique'])) {
                $id_object   = $GLOBALS['contexte']['id_rubrique'];
                $type_object = 'rubrique';
        }

        switch ($type_object) {
                case 'sommaire':        
                        $flux .= '<link rel="canonical" href="'. url_de_base() .'" />';
                        break;
                default:
                        $flux .= '<link rel="canonical" href="'. url_de_base() . generer_url_entite($id_object, $type_object) .'" />';
                        break;
        }
        
        return $flux;
}

/**
 * Renvoyer la balise SCRIPT de Google Analytics
 * @return string $flux
 */
function generer_google_analytics(){
        /* CONFIG */
        $config = unserialize($GLOBALS['meta']['seo']);

        /* GOOGLE ANALYTICS */
        if($config['analytics']['id']){
                // Nouvelle balise : http://www.google.com/support/analytics/bin/answer.py?hl=fr_FR&answer=174090&utm_id=ad
                $flux .= "<script type=\"text/javascript\">
        var _gaq = _gaq || [];
        _gaq.push(['_setAccount', '".$config['analytics']['id']."']);
        _gaq.push(['_trackPageview']);
        (function() {
                var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
                ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
                var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
        })();
</script>
";
        }

        return $flux;
}

/**
 * Renvoyer les META Classiques
 * - Meta Titre / Description / etc.
 * @return string $flux
 */
function generer_meta_tags(){
        include_spip('inc/abstract_sql');

        /* CONFIG */
        $config = unserialize($GLOBALS['meta']['seo']);
        
        if (isSet($GLOBALS['contexte']['id_article'])) {
                $id_object   = $GLOBALS['contexte']['id_article'];
                $type_object = 'article';
        } elseif (isSet($GLOBALS['contexte']['id_rubrique'])) {
                $id_object   = $GLOBALS['contexte']['id_rubrique'];
                $type_object = 'rubrique';
        } else{
                $type_object = 'sommaire';
        }

        /* META TAGS */
        
        // If the meta tags configuration is activate
        $meta_tags = array();
        
        switch ($type_object) {
                case 'sommaire':        
                                $meta_tags = $config['meta_tags']['tag'];
                        break;
                default:
                        $title = couper(sql_getfetsel("titre", "spip_".$type_object."s", "id_$type_object = $id_object"),64);
                        $requete = sql_allfetsel("descriptif,texte", "spip_".$type_object."s", "id_$type_object = $id_object");
                        if($requete) $description = couper(implode(" ",$requete[0]),150,'');
                        // Get the value set by default
                        foreach ($config['meta_tags']['default'] as $name => $option) {
                                if ($option == 'sommaire') {
                                        $meta_tags[$name] = $config['meta_tags']['tag'][$name];
                                } elseif ($option == 'page') {
                                        if ($name == 'title') $meta_tags['title'] = $title;
                                        if ($name == 'description') $meta_tags['description'] = $description;
                                } elseif ($option == 'page_sommaire') {
                                        if ($name == 'title') $meta_tags['title'] = $title . (($title!='')?' - ':'') . $config['meta_tags']['tag'][$name];
                                        if ($name == 'description') $meta_tags['description'] = $description . (($description!='')?' - ':'') . $config['meta_tags']['tag'][$name];
                                }
                        }
                        
                        // If the meta tags rubrique and articles editing is activate (should overwrite other setting)
                        if ($config['meta_tags']['activate_editing'] == 'yes' && ($type_object == 'article' || $type_object == 'rubrique')) {
                                $result = sql_select("*", "spip_seo", "id_object = $id_object AND type_object = '$type_object'");
                                while($r = sql_fetch($result)){
                                        if ($r['meta_content'] != '')
                                                $meta_tags[$r['meta_name']] = $r['meta_content'];
                                }
                        }                               
                        break;
        }
        
        // Print the result on the page
        foreach ($meta_tags as $name => $content) {
                if ($content != '')
                        if ($name=='title')
                                $flux .= '<title>'. htmlspecialchars(supprimer_numero(textebrut(propre($content)))) .'</title>'."\n";
                        else
                                $flux .= '<meta name="'. $name .'" content="'. htmlspecialchars(textebrut(propre($content))) .'" />'."\n";
        }

        return $flux;
}

/**
 * Renvoyer une META toute seule (hors balise)
 * @return string $retour
 */
function generer_meta_brute($nom){      
        $config = unserialize($GLOBALS['meta']['seo']);
        $nom = strtolower($nom);
        
        if($config['meta_tags']['tag'][$nom]){
                return $config['meta_tags']['tag'][$nom];
        }
        
        return false;
}

/**
 * Renvoyer la META GOOGLE WEBMASTER TOOLS
 * @return string $flux
 */
function generer_webmaster_tools(){
        /* CONFIG */
        $config = unserialize($GLOBALS['meta']['seo']);

        if($config['webmaster_tools']['id']){
                $flux .= '<meta name="google-site-verification" content="'. $config['webmaster_tools']['id'] .'"/>';
        }
        
        return $flux;
}

/**
 * Renvoyer la META ALEXA
 * @return string $flux
 */
function generer_alexa(){
        /* CONFIG */
        $config = unserialize($GLOBALS['meta']['seo']);

        if($config['alexa']['id']){
                $flux .= '<meta name="alexaVerifyID" content="'. $config['alexa']['id'] .'"/>';
        }
        
        return $flux;
}