I want search into content a site by url it site, if existence my url (for example: http://www.mydomain.com/  ) return it is TRUE else it is FALSE.   If existence url as following list, Return it is FALSE: - http://www.mydomain.com/blog?12  - www.mydomain.com/news/maste.php  - http://www.mydomain.com/mkds/skas/aksa.html  - www.mydomain.com/  - www.mydomain.com   I want just accsept(find) as(only):   http://www.mydomain.com/  OR http://www.mydomain.com   I tried as: $url = 'http://www.usersite.com';     $ch = curl_init();     curl_setopt($ch, CURLOPT_URL,$url);     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);     $contents = curl_exec($ch);     curl_close($ch);     $link="/http:\/\/mydomain.com/";     if(preg_match("/". preg_quote($link,"/"). "/m", $contents) && strstr($contents,"http://www.mydomain.com")){         echo 'TRUE';     } else{         echo 'FALSE';     }   But it doesn't worked, for it w...