'meta', '#attributes' => array( 'name' => 'citation_title', 'content' => $variables['title'] ) ), 'biblio_scholar_title'); //Sort out the authors $i = 0; foreach($variables['biblio_contributors'] as $author){ $author_types = array(1,2,3,4); if(in_array($author['auth_type'], $author_types) ){ drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_author', 'content' => $author['name'] ), '#weight' => $i, ), 'biblio_scholar_author' . $i); $i++; } } if($variables['biblio_year'] != ''){ drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_publication_date', 'content' => $variables['biblio_year'] ) ), 'biblio_scholar_publication_date'); } if($variables['biblio_secondary_title'] != ''){ drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_journal_title', 'content' => $variables['biblio_secondary_title'] ) ), 'biblio_scholar_secondary_title'); } if($variables['biblio_volume'] != ''){ drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_volume', 'content' => $variables['biblio_volume'] ) ), 'biblio_scholar_volume'); } if($variables['biblio_issue'] != ''){ drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_issue', 'content' => $variables['biblio_issue'] ) ), 'biblio_scholar_issue'); } if($variables['biblio_isbn'] != ''){ drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_isbn', 'content' => $variables['biblio_isbn'] ) ), 'biblio_scholar_isbn'); } if($variables['biblio_issn'] != ''){ // drupal_set_html_head(''); drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_issn', 'content' => $variables['biblio_issn'] ) ), 'biblio_scholar_issn'); } foreach ($variables as $key => $field){ if (is_array($field) && isset($field[0]['fid'])){ foreach ($field as $file){ if ($file['filemime'] == 'application/pdf'){ drupal_add_html_head(array( '#tag' => 'meta', '#attributes' => array( 'name' => 'citation_pdf_url', 'content' => url(file_create_url($file['uri']), array('absolute' => TRUE)) ) ), 'biblio_scholar_url'); } } } } } }