これは公開・サポートが停止されたプラグインのソースです

<?php
 
/**
 * NP_NoLinkNoDisplay
 * 指定した範囲内にリンクが含まれていない場合、その部分を非表示にします。
 * --------
 * Copyright (C) 2006 NKJG
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 * --------
 * History :
 * ver.1.0 (20060420)
 * - 最初のリリース
 */
 
class NP_NoLinkNoDisplay extends NucleusPlugin {
  var $level = 0;
  
  // ====== プラグイン情報 ======
  function getName(){ return 'No Link No Display'; }
  function getAuthor(){ return 'NKJG'; }
  function getURL(){ return 'http://niku.suku.name/'; }
  function getVersion(){ return '1.0'; }
  function getDescription(){ return 'A no-link-no-display plugin.'; }
  function supportsFeature($what) { return (int)($what == 'SqlTablePrefix'); }
  
  function doSkinVar($type, $mode) {
    switch ($mode) {
    case 'start' :
      if (ob_start(array($this, 'NLNDHandler'))) {
        $this->level++;
      }
      break;
    case 'end' :
      if ($this->level) {
        ob_end_flush();
        $this->level--;
      }
      break;
    }
  }
 
  function NLNDHandler($string) {
    if (!preg_match('!<a\s!isS', $string)) {
      $string = '';
    }
    return $string;
  }
}
 
?>