PHP Filter User agent in session – Bot
February 2nd, 2012
由於php session 儲存在 database, 所以當有bot出現的時候, 我看到session 會儲存大量bot session, 所以要檢查user agent 是否bot. 那bot 就不會儲存session (database, file).
function isNotBot(){
$bots = array(
‘msn’ => ‘http://search.msn.com/msnbot.htm’,
‘yahoo’ => ‘http://help.yahoo.com/help/us/ysearch/slurp’,
‘WebAlta’ => ‘http://www.webalta.net/ru/about_webmaster.html’,
‘google’ => ‘http://www.google.com/bot.html’,
‘media_google’ => ‘mediapartners-google’,
‘soso’ => ‘http://help.soso.com/webspider.htm’
);$agent = strtolower($_SERVER[‘HTTP_USER_AGENT’]);
foreach($bots as $name => $bot)
{
if(stripos($agent,$bot)!==false)
{
//echo $name;
return false;
}
}//if( strpos( $_SERVER[‘HTTP_USER_AGENT’], “Googlebot” ) !== false )
//return false;
return true;
}if(isNotBot())
session_start();