{

if(empty($_SERVER['HTTP_USER_AGENT']))

{

returnfalse;

}

$searchEngineBot=array(

'googlebot'=>'google',

'mediapartners-google'=>'google',

'baiduspider'=>'baidu',

'msnbot'=>'msn',

'yodaobot'=>'yodao',

'youdaobot'=>'yodao',

'yahoo!slurp'=>'yahoo',

'yahoo!slurpchina'=>'yahoo',

'iaskspider'=>'iask',

'sogouwebspider'=>'sogou',

'sogoupushspider'=>'sogou',

'sosospider'=>'soso',

'spider'=>'other',

'crawler'=>'other',

);

$spider=strtolower($_SERVER['HTTP_USER_AGENT']);

foreach($searchEngineBotas$key=>$value)

{

if(strpos($spider,$key)!==false)

{

return$value;

}

}

returnfalse;

}

publicfunctionisRobot()

{

if($this->getRobot()!==false)

{

returntrue;

}

returnfalse;

}