Ecshop judge whether the search engine is a spider

<?PHP/** * to determine if search engine spider * * @access public * @return String*/functionIs_spider ($record=true){    Static $spider=NULL; if($spider!==NULL)    {        return $spider; }    if(Empty($_server[' Http_user_agent ']))    {        $spider= ' '; return‘‘; }    $searchengine _bot=Array(        ' Googlebot ', ' mediapartners-google ', ' baiduspider+ ', ' msnbot ', ' yodaobot ', ' Yahoo! slurp; ', ' Yahoo! Slurp China; ', ' iaskspider ', ' Sogou web spider ', ' Sogou push spider '    ); $searchengine _name=Array(        ' Google ', ' Google ADSENSE ', ' BAIDU ', ' MSN ', ' Yodao ', ' Yahoo ', ' Yahoo China ', ' Iask ', ' SOGOU ', ' SOGOU '    ); $spider=Strtolower($_server[' Http_user_agent ']); foreach($searchengine _bot  as $key=$value)    {        if(Strpos($spider,$value) !==false)        {            $spider=$searchengine _name[$key]; if($record===true)            {                $GLOBALS[' DB ']->autoreplace ($GLOBALS[' ECS ']->table (' searchengine '),Array(' Date ' = Local_date (' y-m-d '), ' searchengine ' =$spider, ' count ' = 1),Array(' count ' = 1)); }            return $spider; }    }    $spider= ' '; return‘‘;}?>

Ecshop judge whether the search engine is a spider