[Resolved] regex help turning www. into <a href="http://www.">www.</a>

kburger

I'm pulling my hair out on this one. I suck at regular expressions. I'm using the following regex (written by somebody on this board) to parse form values containing text like 'www.google.com' into <a href="http://www.google.com">www.google.com</a>. This works great if it contains 'http://', but not if it just contains 'www.'. Any help would be appreciated!

$text = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_+.~#?&//=]+)',
	 '<a href="\1">\1</a>', $text);

drew010

its not perfect cause it consumes the whitespaces after the url and then you end up losing the space or worse the newline after a url, but it does the replacement. it shouldnt be too much work to fix that, but its late and im tired and my eyes are having trouble with that lol.

<?php

$text = <<<EOD
www.google.com/yeahh www.yahoo.com
http://www.msn.com/
https://www.search.com
EOD;

$reg = array("/\s(www\.(?:\S+))/i",
             "/\s((?:f|ht)tps?:\/\/(?:\S+))/i");

$rep = array("<a href=\"http://\\1\">\\1</a>",
             "<a href=\"\\1\">\\1</a>");

echo preg_replace($reg, $rep, " " . $text);

?>

kburger

Thanks for the help drew010! Much appreciated. I'll give it a try.

kburger

Perfect! I had to modify it slightly to keep the whitespace just before the anchor tag.

$rep = array(" <a href=\"http://\\1\">\\1</a>",
             " <a href=\"\\1\">\\1</a>");

Thanks again drew010!