Replace URLs in text with HTML links

Question

Here is a design though: For example is I put a link such as

http://example.com

in textarea. How do I get PHP t

Answer 1

I've been using this function, it works for me

function AutoLinkUrls($str,$popup = FALSE){
    if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches)){
        $pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
        for ($i = 0; $i < count($matches['0']); $i++){
            $period = '';
            if (preg_match("|\.$|", $matches['6'][$i])){
                $period = '.';
                $matches['6'][$i] = substr($matches['6'][$i], 0, -1);
            }
            $str = str_replace($matches['0'][$i],
                    $matches['1'][$i].'<a href="http'.
                    $matches['4'][$i].'://'.
                    $matches['5'][$i].
                    $matches['6'][$i].'"'.$pop.'>http'.
                    $matches['4'][$i].'://'.
                    $matches['5'][$i].
                    $matches['6'][$i].'</a>'.
                    $period, $str);
        }//end for
    }//end if
    return $str;
}//end AutoLinkUrls

All credits goes to - http://snipplr.com/view/68586/

Enjoy!

Answer 2

If you want to trust the IANA you can get your current list of offcially supported TLDs in use there like:

  $validTLDs = 
explode("\n", file_get_contents('http://data.iana.org/TLD/tlds-alpha-by-domain.txt')); //get the official list of valid tlds
  array_shift($validTLDs); //throw away first line containing meta data
  array_pop($validTLDs); //throw away last element which is empty

Makes Søren Løvborg's solution #2 a bit less verbose and spares you the hassle of updating the list, nowadays new tlds are thrown out so carelessly ;)

Answer 3

You guyz are talking way to advance and complex stuff which is good for some situation, but mostly we need a simple careless solution. How about simply this?

preg_replace('/(http[s]{0,1}\:\/\/\S{4,})\s{0,}/ims', '<a href="$1" target="_blank">$1</a> ', $text_msg);

Just try it and let me know what crazy url it doesnt satisfy.

Answer 4

This should get your twitter handle without touching on your email /(?<=^|(?<=[^a-zA-Z0-9-.]))@([A-Za-z]+[A-Za-z0-9]+)/i

Answer 5

This is just a variation of the solution posted by Dharmendra Jadon, so if you like it up vote his instead!

I just added a parameter to make opening the link in a new window (target="_blank") optional, as I saw this in some of the other solutions and liked the flexibility:

function MakeUrls($str, $popup = FALSE)
{
    $find=array('`((?:https?|ftp)://\S+[[:alnum:]]/?)`si','`((?<!//)(www\.\S+[[:alnum:]]/?))`si');

    $replace=array('<a href="$1"' . ($popup ? ' target="_blank"' : '') . '>$1</a>', '<a href="http://$1"' . ($popup ? ' target="_blank"' : '') . '>$1</a>');

    return preg_replace($find,$replace,$str);
}

Answer 6

Here is something i found that is tried and tested

function make_links_blank($text)
{
  return  preg_replace(
     array(
       '/(?(?=<a[^>]*>.+<\/a>)
             (?:<a[^>]*>.+<\/a>)
             |
             ([^="\']?)((?:https?|ftp|bf2|):\/\/[^<> \n\r]+)
         )/iex',
       '/<a([^>]*)target="?[^"\']+"?/i',
       '/<a([^>]+)>/i',
       '/(^|\s)(www.[^<> \n\r]+)/iex',
       '/(([_A-Za-z0-9-]+)(\\.[_A-Za-z0-9-]+)*@([A-Za-z0-9-]+)
       (\\.[A-Za-z0-9-]+)*)/iex'
       ),
     array(
       "stripslashes((strlen('\\2')>0?'\\1<a href=\"\\2\">\\2</a>\\3':'\\0'))",
       '<a\\1',
       '<a\\1 target="_blank">',
       "stripslashes((strlen('\\2')>0?'\\1<a href=\"http://\\2\">\\2</a>\\3':'\\0'))",
       "stripslashes((strlen('\\2')>0?'<a href=\"mailto:\\0\">\\0</a>':'\\0'))"
       ),
       $text
   );
}

It works for me. And it works for emails and URL's, Sorry to answer my own question. :(

But this one is the only that works

Here is the link where i found it : http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_21878567.html

Sry in advance for it being a experts-exchange.