Illustrates how to use new filter in ScholarPress Coins plugin

filter_scholarpress_coins.php

<?php

function my_custom_coins_title($coinsTitle)
{
  global $post;
  
  // Starts the coins title value again.
  $coinsTitle = 'ctx_ver=Z39.88-2004'
              . '&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc'
              . '&amp;rfr_id=info%3Asid%2Focoins.info%3Agenerator'
              . '&amp;rft.type='
              . '&amp;rft.format=text'
              . '&amp;rft.title='.urlencode($post->post_title)
              . '&amp;rft.source='.urlencode(get_bloginfo('name'))
              . '&amp;rft.date='.get_the_time('Y-m-d')
              . '&amp;rft.identifier='.urlencode(get_permalink($post->ID))
              . '&amp;rft.language=English';

  if ($cats = get_the_category()) {
      foreach((get_the_category()) as $cat) {
          $coinsTitle .= '&amp;rft.subject='.urlencode($cat->cat_name);
      }
  }

  // Custom post metadata for author field.
  $authors = get_post_custom_values('author');
  if ($authors) {
    foreach($authors as $author) {
      $coinsTitle .= '&amp;rft.au='.urlencode($author);
    }
  }  

  return $coinsTitle;
}

add_filter('scholarpress_coins_span_title', 'my_custom_coins_title');