<?php
$a=strstr($_SERVER["HTTP_USER_AGENT"], "ahoo"); //yahoo
$b=strstr($_SERVER["HTTP_USER_AGENT"], "msn"); //msn
$c=strstr($_SERVER["HTTP_USER_AGENT"], "oogle"); //google
$d=strstr($_SERVER["HTTP_USER_AGENT"], "andex"); //yandex
$e=strstr($_SERVER["HTTP_USER_AGENT"], "andex"); //yandex
$f=strstr($_SERVER["HTTP_USER_AGENT"], "ambler"); //rambler
$g=strstr($_SERVER["HTTP_USER_AGENT"], "ames"); //Bond, James Bond Yandex
$h=strstr($_SERVER["HTTP_USER_AGENT"], "ambler"); //rambler
$i=strstr($_SERVER["HTTP_USER_AGENT"], "port"); //Aport
$j=strstr($_SERVER["HTTP_USER_AGENT"], "nktomi"); //inktomi.com
$k=strstr($_SERVER["HTTP_USER_AGENT"], "turtle"); //turtle
$l=strstr($_SERVER["HTTP_USER_AGENT"], "ebalta"); //Webalta
$m=strstr($_SERVER["HTTP_USER_AGENT"], "igma"); //Nigma.ru
$n=strstr($_SERVER["HTTP_USER_AGENT"], "WebAlta Crawler"); //rawler
$o=strstr($_SERVER["HTTP_USER_AGENT"], "YaDirectBot"); //YaDirectBot
$p=strstr($_SERVER["HTTP_USER_AGENT"], "Mediapartners-Google"); //Mediapartners-Google
$p=strstr($_SERVER["HTTP_USER_AGENT"], "YaDirectBot"); //YaDirectBot

if ($a==true or $b==true or $c==true or $d==true or $e==true or $f==true or $g==true or $h==true or $i==true or $j==true or $k==true or $l==true or $m==true or $n==true or $o==true or $p==true)
{
?>
User-agent: Yandex
Host: www.taxizakaz.ru
Disallow: /style.css
Disallow: /files
User-agent: *
Disallow: /style.css

<?php
} 
else {
?>

User-agent: Yandex
Disallow: /style.css
Host: www.taxizakaz.ru
User-agent: *
Disallow: /style.css
<?php
}
?>