function f_url($buf) {
if(!substr_count($_SERVER[REQUEST_URI],"administration")){
$buf = preg_replace('#profile\.php\?lookup=([0-9]*?)(\'|")#si', 'profilis\1\2', $buf);
}
return $buf;
} 
 
ob_start("f_url");
Parsed in 0.022 seconds, using GeSHi 1.0.8.10

RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_URI} ^/(.*)$
RewriteRule ^profilis,([0-9]+)$ profile.php?lookup=$1 [L]
Parsed in 0.024 seconds, using GeSHi 1.0.8.10