* @return String
* @private
*/
- function columnList( $articles, $articles_start_char ) {
+ static function columnList( $articles, $articles_start_char ) {
$columns = array_combine( $articles, $articles_start_char );
# Split into three columns
$columns = array_chunk( $columns, ceil( count( $columns ) / 3 ), true /* preserve keys */ );
* @return String
* @private
*/
- function shortList( $articles, $articles_start_char ) {
+ static function shortList( $articles, $articles_start_char ) {
$r = '<h3>' . htmlspecialchars( $articles_start_char[0] ) . "</h3>\n";
$r .= '<ul><li>' . $articles[0] . '</li>';
for ( $index = 1; $index < count( $articles ); $index++ )