// load plugin params info
$plugin         =& JPluginHelper::getPlugin('search', 'content');
$pluginParams   = new JParameter( $plugin->params );

$sContent       = $pluginParams->get( 'search_content',       1 );
 // $sUncategorised = $pluginParams->get( 'search_uncategorised',    1 );
$sArchived       = $pluginParams->get( 'search_archived',       1 );
$limit          = $pluginParams->def( 'search_limit',       50 );

$wheres2[] = "LOWER(a.metakey) NOT LIKE '{nosearch}'"; 

$wheres = array();
switch ($phrase) {
  case 'exact':
    $text = $db->getEscaped($text);
    $wheres2    = array();
    $wheres2[]    = "LOWER(a.title) LIKE '%$text%'";
    $wheres2[]    = "LOWER(a.introtext) LIKE '%$text%'";
    $wheres2[]    = "LOWER(a.`fulltext`) LIKE '%$text%'";
    $wheres2[]    = "LOWER(a.metakey) LIKE '%$text%'";
    $wheres2[]    = "LOWER(a.metadesc) LIKE '%$text%'";
    $wheres2[]    = "LOWER(a.metakey) NOT LIKE '%{nosearch}%'";
    $where       = '(' . implode( ') OR (', $wheres2 ) . ')';
  break;