Question

Hello everyone i have a problem
I have a text

$text = " some and text http://www.somelink2.com/html5.jpg and some text http://www.somelink.net/test/testjava/html5.html#fbid=QTb-X6fv5p1 some http://www.somelink4.org test and http://www.somelink3.org/link.html text and some text ";

i need to transform all text links http/s exept domains somelink3.org,somelink2.com they must be plain text

Something like this but with domains filter and not extention images:

function livelinked ($text){
        preg_match_all("#((http|https|ftp)://(\S*?\.\S*?))(\s|\;|\)|\]|\[|\{|\}|,|\"|'|:|\<|$|\.\s)|^(jpg)^#ie", $text, $ccs);
        foreach ($ccs[3] as $cc) {
           if (strpos($cc,"jpg")==false  && strpos($cc,"gif")==false && strpos($cc,"png")==false ) {
              $old[] = "http://".$cc;
              $new[] = '<a href="http://'.$cc.'" target="_blank">'.$cc.'</a>';
           }
        }
        return str_replace($old,$new,$text);
}

edit: this helped me :

$text =  preg_replace("~((?:http|https|ftp)://(?!site.com|site2.com|site3.com)(?:\S*?\.\S*?))(?=\s|\;|\)|\]|\[|\{|\}|,|\"|'|:|\<|$|\.\s)~i",'<a href="$1" target="_blank">$1</a>',$text);  

Answer 1

You can use a (?!...) negative lookahead assertion for such cases. Simply add (?!somelink3.org|somelink2.com) immediately after the protocol placeholder ://.

 #((http|https|ftp)://(?!domain1|domain2)(\S*?\.\S*?))....

Also you shouldn’t use preg_match_all in combination with a clumsy str_replace as secondary step. Instead utilize preg_replace_callback and put all the logic in one function.