add_anchors( $content ); } return $content; } /** - Add Links * Replace headings with an anchor */ private function add_anchors( $text ) { // search for headlines $pattern = '#]+)?>(.+?)#is'; preg_match_all( $pattern , $text , $headlines, PREG_SET_ORDER); if( $headlines ){ foreach ($headlines as $headline) { if ( strlen( $headline[2] ) ) { $anchor = sanitize_title( $headline[2] ); $icon = ''; $pos = strpos($text, $headline[0]) + 4; $text = substr_replace($text, $icon, $pos, 0); // inssert after h tag } } } return $text; } } } new Add_Anchor_Links();